Congruence and Similarity: a checklist for understanding key theorems

Congruence and Similarity: a checklist for understanding key theorems

Introduction to Congruence and Similarity

**

Embarking on the Journey of Congruence and Similarity

**

Imagine you're at a bustling Pasar Malam, the night market lights twinkling like stars, and you spot two identical-looking 'Lok Lok' skewers. How do you know they're truly the same? Welcome to the world of Congruence and Similarity, where we dive into the fascinating realm of shapes that are the same or almost the same! In Singaporean demanding post-primary schooling structure, students gearing up for the O-Level examinations commonly encounter escalated challenges regarding maths, encompassing advanced topics like trigonometry, introductory calculus, and coordinate geometry, which call for strong comprehension and application skills. Parents frequently look for specialized assistance to make sure their teenagers are able to manage curriculum requirements and build test assurance with specific drills and strategies. maths tuition classes delivers essential reinforcement with MOE-aligned curricula, qualified instructors, and tools like old question sets plus simulated exams to tackle individual weaknesses. The initiatives highlight issue-resolution strategies efficient timing, assisting students attain better grades in their O-Levels. Finally, committing in this support not only prepares pupils for national exams while also establishes a strong base for post-secondary studies within STEM disciplines.. Let's explore this journey, inspired by the Secondary 2 Math Syllabus Singapore.

**

What's the Buzz About Congruence?

**

Congruence is like having an identical twin in the shape world. Two shapes are congruent if they have the same size and shape. In Singaporean post-primary schooling environment, the transition from primary to secondary school presents students to more abstract mathematical concepts including algebraic equations, geometric shapes, and statistics and data, these may seem intimidating lacking suitable direction. Numerous parents understand this key adjustment stage needs extra strengthening to enable young teens cope with the greater intensity and maintain excellent educational outcomes in a competitive system. Building on the foundations established in PSLE readiness, targeted initiatives become crucial for addressing personal difficulties while promoting autonomous problem-solving. primary school maths tuition provides tailored lessons matching the MOE syllabus, including interactive tools, step-by-step solutions, and analytical exercises to make learning stimulating while efficient. Seasoned tutors prioritize closing learning voids from primary levels and incorporating secondary-specific strategies. Finally, such initial assistance also enhances grades plus test preparation and additionally nurtures a deeper appreciation for mathematics, preparing pupils toward O-Level excellence and further.. Fun fact: The ancient Greeks were so fascinated by congruence that they even had a special symbol, '≅', to represent it!

  • **Key Theorem Alert!** Side-Angle-Side (SAS) Congruence: If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent.
  • **Tip for Parents and Students**: Practice drawing congruent shapes to master this concept. Remember, like the 'Lok Lok' skewers, every part must be identical!

**

In Singapore's challenging post-primary schooling landscape, the move from primary to secondary introduces pupils to increasingly intricate math ideas like basic algebra, integers, plus geometry basics, that may seem overwhelming lacking sufficient groundwork. Numerous families emphasize supplementary learning to fill potential voids and foster an enthusiasm toward mathematics early on. p4 math tuition delivers focused , Ministry of Education-compliant sessions featuring seasoned educators that highlight analytical techniques, personalized feedback, and engaging activities to develop foundational skills. These programs commonly include limited group sizes for better interaction and regular assessments to monitor advancement. Ultimately, investing in this early support doesn't just enhances academic performance while also prepares early teens for advanced secondary hurdles and long-term success within STEM disciplines..

Similarity: Besties, Not Twins

**

Now, let's meet similarity, the cousin of congruence. Shapes are similar if they have the same angles and their corresponding sides are in proportion. Think of similar shapes as best friends - they share many characteristics but aren't exactly the same.

**Interesting Fact**: The concept of similar shapes was first explored by the ancient Egyptians in their architectural drawings, around 1500 BCE!

  • **Key Theorem Alert!** AA (Angle-Angle) Similarity: If two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar.
  • **Fun Activity**: Use a ruler to draw similar triangles, scaling one shape up or down. Observe how the angles remain the same, but the sides change proportionally.

**

Navigating the Real World with Congruence and Similarity

**

Congruence and similarity aren't just for exams; they're everywhere! From designing blueprints for HDB flats to planning the layout of Gardens by the Bay, understanding these concepts helps create accurate and proportionate designs.

**What if** we didn't have congruence and similarity? Our drawings would be a mess, and buildings would lean like the Tower of Pisa! Yikes!

**

Let's Not Forget the Challenges

**

While understanding congruence and similarity is crucial, it's not always easy. Picturing and drawing these shapes can be tricky. But remember, every 'cannot do' is a 'can try' in disguise. Keep practicing, and you'll master these concepts!

And there you have it, folks! The captivating journey of congruence and similarity. So, the next time you're at a Geylang Serai Bazaar, remember to appreciate the congruent and similar shapes around you. Happy exploring!

Applying Congruence and Similarity in Proofs

In secondary 2 math, understanding congruence and similarity is essential for constructing valid mathematical proofs. This includes using the properties of congruent and similar triangles to prove other theorems and solve problems.

Understanding Congruent Triangles

Two triangles are congruent if their corresponding sides and angles are equal. This means all three sides and angles must match for congruence. In secondary 2 math, this concept is crucial for proving many theorems.

Criteria for Similar Triangles

Triangles are similar if their corresponding angles are equal, and their sides are proportional. This is a key concept to understand as it leads to the understanding of the AA (Angle-Angle), SAS (Side-Angle-Side), and SSS (Side-Side-Side) similarity postulates.

Key Definitions and Postulates

**

Getting Started with Congruence and Similarity

**

Imagine you're a detective, tasked with solving the mystery of shapes. Your first clue? Understanding congruence and similarity. Let's dive in!

**

Congruence: The Twin Brothers of Geometry

**

Congruence is like having twin brothers, except they're perfect copies of each other. In the world of shapes, two figures are congruent if they have the same size and shape. It's like having two identical Lego houses, built by the same architect.

Fun Fact: The ancient Greeks loved congruence so much, they dedicated an entire theorem to it - the Side-Angle-Side (SAS) Congruence Postulate.

**

Similarity: When Shapes Are Like Twins, But Not Quite

**

Similarity is like having cousins who resemble each other, but aren't exactly the same. In geometry, similar shapes have the same angle measures and their corresponding sides are proportional. It's like having two Lego houses, one built by a giant and the other by a tiny ant.

History Lesson: The concept of similarity was first discussed by the Greek mathematician Euclid in his book "Elements".

**

Key Theorems: Your Trusty Sidekicks

**

  • SAS Similarity Theorem: If two angles in one triangle are congruent to two angles in another triangle, and the included sides are proportional, then the triangles are similar.
  • AA (Angle-Angle) Similarity Postulate: If two angles in one triangle are congruent to two angles in another triangle, then the triangles are similar.
  • In Singaporean organized secondary education system, Secondary 2 pupils start addressing advanced maths subjects like equations with squares, shape congruence, plus data statistics, that develop from Secondary 1 basics and equip ahead of advanced secondary needs. Families frequently look for supplementary tools to assist their teens adjust to the growing intricacy and maintain consistent progress under academic stresses. maths tuition near me provides customized , Ministry of Education-aligned sessions featuring experienced tutors who apply interactive tools, real-life examples, and concentrated practices to bolster comprehension plus test strategies. These lessons encourage autonomous analytical skills and address specific challenges including manipulating algebra. In the bustling city-state of Singapore's dynamic and scholastically intense setting, families recognize that laying a robust academic foundation right from the beginning leads to a significant impact in a child's future success. The journey to the Primary School Leaving Examination (PSLE) begins much earlier than the exam year, as foundational behaviors and abilities in disciplines including maths establish the foundation for higher-level education and problem-solving abilities. With early readiness efforts in the first few primary levels, learners are able to dodge frequent challenges, build confidence step by step, and cultivate a optimistic mindset toward challenging concepts that will intensify down the line. math tuition in Singapore serves a crucial function as part of this proactive plan, delivering child-friendly, interactive classes that present fundamental topics such as basic numbers, forms, and basic sequences matching the MOE curriculum. These initiatives use fun, engaging techniques to spark interest and avoid learning gaps from arising, promoting a easier transition across higher levels. In the end, investing in such early tuition not only reduces the pressure associated with PSLE and additionally equips kids for life-long analytical skills, providing them a head start in Singapore's achievement-oriented society.. In the end, this focused assistance enhances comprehensive outcomes, minimizes anxiety, and sets a solid path for O-Level success plus long-term studies..

**

Secondary 2 Math Syllabus Singapore: Where's the Action?

**

You'll find these exciting concepts in the Secondary 2 Mathematics Syllabus by the Ministry of Education, Singapore.

What if you could solve a mystery every time you picked up your geometry set? That's the power of understanding congruence and similarity!" width="100%" height="480">Congruence and Similarity: a checklist for understanding key theorems

Congruence of Angles

Angle Bisectors

In the realm of secondary 2 math syllabus Singapore, understanding angle bisectors is crucial. When two angles are congruent, their bisectors are also congruent. This is like having a magic mirror that reflects angles perfectly. Imagine you're cutting a pizza into slices - the line that divides the angle in half is its bisector. It's like having a secret map that guides you to the heart of the angle.

Corresponding Angles

Ever played with building blocks as a kid? If you place two shapes side by side and their angles point in the same direction, those angles are corresponding. In the Singapore secondary 2 math syllabus, this is a key concept. When two parallel lines are cut by a transversal, the corresponding angles are congruent. It's like they're best friends, always sticking together and being the same.

Alternate Interior Angles

Now, let's play a game of hide and seek. When two parallel lines are crossed by another line, the angles that are on the inside and on opposite sides of the transversal are alternate interior angles. They're like secret allies, hiding from each other but still being congruent. In the secondary 2 math syllabus Singapore, this is another important theorem to remember.

Co-Interior Angles

Remember when you were little and you'd draw a straight line on paper? The angles on the same side of a transversal that cut two parallel lines are co-interior angles. They're like twins, always on the same side and being the same. In the world of the secondary 2 math syllabus, these angles are also congruent.

Supplementary Angles

Ever heard of the total angle sum theorem? As Singapore's educational structure places a heavy focus on math mastery right from the beginning, guardians are increasingly emphasizing organized support to help their youngsters navigate the rising complexity in the syllabus at the start of primary education. In Primary 2, students meet more advanced concepts such as regrouped addition, simple fractions, and measurement, which expand on foundational skills and lay the groundwork for higher-level analytical thinking needed for future assessments. Acknowledging the benefit of ongoing support to prevent early struggles and foster interest in the discipline, numerous opt for tailored programs in line with Singapore MOE directives. primary 3 tuition rates provides specific , interactive classes developed to make such ideas understandable and enjoyable through interactive tasks, graphic supports, and personalized feedback from experienced tutors. This approach doesn't just assists primary students master immediate classroom challenges but also develops critical thinking and resilience. In the long run, this proactive support leads to smoother educational advancement, minimizing stress as students approach milestones including the PSLE and creating a optimistic trajectory for ongoing education.. In Singaporean, the educational framework concludes primary schooling with a national examination designed to measure pupils' scholastic performance and determines placement in secondary schools. The test is administered on a yearly basis among pupils during their last year of primary education, focusing on core disciplines to gauge overall proficiency. The PSLE acts as a standard for assignment for fitting secondary courses depending on scores. The exam covers disciplines like English, Mathematics, Sciences, and Mother Tongue Languages, featuring structures updated periodically to reflect academic guidelines. Evaluation depends on Achievement Levels from 1 to 8, where the total PSLE Score equals the addition of individual subject scores, affecting long-term educational prospects.. It's like a magical rule that states the sum of angles in a straight line is always 180 degrees. Supplementary angles are a pair of angles that add up to this magic number. It's like they're a dynamic duo, always complementing each other to make a perfect whole. In the secondary 2 math syllabus Singapore, understanding supplementary angles is like having a secret weapon to solve problems.

Congruent Triangles: Side-Angle-Side (SAS) and Side-Side-Side (SSS) Criteria

**

Triangles' Secret Handshake: SAS & SSS Criteria

** Alright, imagine you're at a secret club meeting, and you want to prove that two new members are indeed who they say they are. In the world of triangles, the secret handshakes are the Side-Angle-Side (SAS) and Side-Side-Side (SSS) criteria. Let's dive in! **

SAS: The Triangle Twins

**

Fun Fact

: Did you know that the SAS criterion is like the 'twin' test in human siblings? If two sides and the included angle are equal, the triangles are congruent, just like how identical twins share the same DNA! 1. **Side-Angle-Side (SAS)**: This is the most common method to prove triangles congruent. It works like this: - If two sides of one triangle are equal to two sides of another triangle, and the angles between these sides are also equal, then the triangles are congruent. *Example*: Imagine you have two pieces of paper, and you fold one to form a triangle. If you unfold it and place it on top of the other piece of paper, and the sides and the angle between them match, then you've got two congruent triangles! **

SSS: The Perfect Match

**

Interesting Fact

: The SSS criterion is like finding your perfect match on a dating app - all sides must match exactly for it to work! 2. **Side-Side-Side (SSS)**: This is the second method to prove triangles congruent, but it's a bit stricter than SAS: - If all three sides of one triangle are equal to the three sides of another triangle, then the triangles are congruent. *Caution*: SSS doesn't work if you're trying to match a scalene (unequal sides) triangle with an isosceles (two sides equal) or equilateral (all sides equal) triangle. They're like apples and oranges! **

History's Hidden Gem: Euclid's Contribution

** *History Lesson*: The SAS and SSS criteria are not new. They were first introduced by the ancient Greek mathematician Euclid in his work "Elements". In the Republic of Singapore's demanding schooling structure, the Primary 3 level signifies a key transition in which pupils dive more deeply into topics like multiplication tables, fraction concepts, and basic data interpretation, developing from earlier foundations to prepare for sophisticated problem-solving. Numerous guardians observe that school tempo alone could fall short for each student, motivating them to look for additional help to foster math enthusiasm and avoid initial misunderstandings from forming. During this stage, tailored academic help is crucial to sustain academic momentum and fostering a development-oriented outlook. jc math tuition singapore offers concentrated, MOE-compliant instruction using compact class groups or one-on-one mentoring, emphasizing creative strategies and visual aids to clarify complex ideas. Educators frequently incorporate gamified elements and frequent tests to monitor advancement and boost motivation. Ultimately, this proactive step doesn't just boosts immediate performance but also builds a strong base for thriving at advanced primary stages and the eventual PSLE.. Euclid was like the Einstein of his time, making complex ideas simple and accessible. **

Singapore's Math Scene: Secondary 2 & Beyond

** *Singlish Moment*: "Eh, you know what, secondary 2 math in Singapore is not so tough if you master SAS and SSS!" If you're a secondary 2 student in Singapore, or a parent helping your child, mastering these criteria is key to acing your math syllabus. So, grab your thinking caps and let's practise making these secret handshakes!

Applications of Congruence Theorems

**

**

Your Guide to Mastering Congruence and Similarity: A Checklist for Secondary 2 Math in Singapore

Imagine you're a detective, and the lines, angles, and shapes in your math textbook are clues to solve a mystery. Welcome to the exciting world of congruence and similarity! Let's dive in and explore the key theorems that'll help you ace your secondary 2 math syllabus Singapore.

**Fun Fact:**

Did you know? The ancient Greeks were the first to study geometry seriously. They believed it was a perfect, divine subject, untouched by human error. Now, that's some serious respect for math!

**Side by Side: Congruent and Similar Triangles**

Picture two triangles, side by side. If they look like they could be twins, they're either congruent or similar. Let's find out how to tell them apart.

  1. Congruent Triangles: These are like identical twins. They have the same size and shape. To prove two triangles are congruent, you can use these theorems:
  • Side-Side-Side (SSS) Postulate: If all three sides of one triangle are equal to the corresponding sides of another triangle, the triangles are congruent.
  • Angle-Side-Angle (ASA) Congruence Theorem: If two angles and the included side of one triangle are equal to the corresponding parts of another triangle, the triangles are congruent.
  • Angle-Angle-Side (AAS) Congruence Theorem: If two angles and a non-included side of one triangle are equal to the corresponding parts of another triangle, the triangles are congruent.
  • Hypotenuse-Leg (HL) Congruence Theorem: If the hypotenuse and one leg of a right triangle are equal to the corresponding parts of another right triangle, the triangles are congruent.
  • Similar Triangles: These are like cousins. They have the same shape, but not necessarily the same size. To prove two triangles are similar, use these theorems:
  • In Singapore's achievement-oriented education framework, Primary 4 serves as a crucial turning point during which the syllabus escalates with topics for example decimals, symmetrical shapes, and introductory algebra, pushing pupils to implement logical thinking through organized methods. Many families recognize that school lessons by themselves may not completely cover personal learning speeds, prompting the quest for extra aids to solidify concepts and ignite lasting engagement with maths. With planning toward the PSLE increases, steady drilling becomes key for conquering those core components while avoiding overburdening child learners. additional mathematics tuition offers personalized , interactive instruction that follows MOE standards, including practical illustrations, brain teasers, and tech aids to make abstract ideas concrete and enjoyable. Qualified tutors focus on identifying weaknesses promptly and turning them into strengths with incremental support. Over time, this dedication cultivates resilience, better grades, and a seamless progression into upper primary stages, preparing learners along a route toward educational achievement..
    • Angle-Angle (AA) Similarity Postulate: If two angles of one triangle are equal to the corresponding angles of another triangle, the triangles are similar.
    • Side-Angle-Side (SAS) Similarity Theorem: If two sides of one triangle are proportional to two sides of another triangle, and the included angles are equal, the triangles are similar.

    **What if?**

    What if you could use these theorems to solve real-life mysteries, like finding the height of a tall building or measuring the distance to a star? The power of math is amazing!

    **Practice Makes Perfect**

    Now that you've learned the key theorems, it's time to practice! Grab your math workbook and start solving problems. Remember, the more you practice, the better you'll become. Soon, you'll be solving problems like a pro, and acing your secondary 2 math syllabus Singapore!

    So, are you ready to become a geometry detective? The world of congruence and similarity is waiting for you. Go forth and solve those mysteries!

    **

    **

    " title="" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen>

    Introduction to Similarity

    **

    Kicking Off with the Basics: Defining Similarity

    ** In the bustling Lion City, where the scent of kopi and kaya toasts fills the air, our journey begins with a fundamental question. **What makes two shapes similar, but not quite the same?** Imagine you're at a hawker centre, eyeing two plates of Hainanese chicken rice. As Primary 5 introduces a heightened level of complexity in Singapore's mathematics program, including topics such as ratio calculations, percentages, angular measurements, and advanced word problems calling for keener analytical skills, parents frequently seek approaches to ensure their youngsters remain in front while avoiding frequent snares in comprehension. This stage proves essential as it immediately connects with PSLE prep, where accumulated learning faces thorough assessment, necessitating timely aid key to develop stamina when handling step-by-step queries. With the pressure escalating, dedicated help assists in converting likely irritations to avenues for development and proficiency. secondary 3 tuition provides students with strategic tools and individualized coaching in sync with Ministry of Education standards, using strategies like model drawing, graphical bars, and practice under time to clarify complicated concepts. Dedicated instructors prioritize understanding of ideas beyond mere repetition, fostering dynamic dialogues and mistake review to build confidence. By the end of the year, participants usually demonstrate marked improvement in test preparation, facilitating the route for an easy move to Primary 6 plus more within Singapore's intense educational scene.. One is from your regular stall, and the other is from a new stall you're eager to try. They look alike, but they're not exactly the same. That's similarity in a nutshell! In the realm of secondary 2 math syllabus Singapore, similarity is a concept that's as essential as the morning traffic rules on our bustling roads. Let's dive into the **Ministry of Education's** definition: **Two figures are similar if their corresponding angles are equal, and their corresponding sides are in proportion.** **

    Angle Angels and Side Sidesteps: The Key Components

    ** 1. **Angle Angels**: Imagine angles as the traffic cops of our shapes, guiding the flow of lines. In similar figures, these angle cops whistle the same commands – they are equal. If you've ever struggled with angle pairs, think of them as the best of friends, always sticking together and maintaining the same measure. 2. **Side Sidesteps**: Now, picture the sides of your shapes as the commuters on our MRT lines. In similar figures, these commuters maintain a consistent ratio, just like how the distance between City Hall and Raffles Place is always the same, regardless of the train's speed. **

    Fun Fact: The Story of Similar Triangles

    ** Did you know that the concept of similar triangles was first documented by the ancient Greeks? They noticed that even when a triangle was squashed or stretched, its angles remained the same, and its sides maintained their proportions. This discovery was as groundbreaking as finding out that Hainanese chicken rice tastes even better with a dash of chili sauce! **

    Interesting Fact: Similarity in Nature

    ** Look around you – nature is full of similar, but not identical, objects. From the petals of a Vanda Miss Joaquim orchid to the scales of a mermaid's tail (well, maybe not the last one!), the principle of similarity is everywhere. Isn't it fascinating how Mother Nature uses this mathematical concept to create her masterpieces? **

    What if...?

    ** What if we could magically resize our HDB flats while keeping their layout and proportions the same? That's the power of similarity in action! While we can't do that in real life, understanding similarity can help us tackle complex problems in our secondary 2 math syllabus Singapore, making us true masters of our mathematical domain. Next stop, we explore the exciting world of **Congruence**, where shapes are not just similar, but virtually identical. So, buckle up, and let's continue this mathematical adventure!

    " title="" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen>

    Proving Similar Triangles: AA (Angle-Angle) and SSS (Side-Side-Side) Postulates

    **

    In Singapore's intense scholastic landscape, Primary 6 represents the capstone year in primary schooling, during which students bring together prior education in preparation for the vital PSLE exam, dealing with escalated topics including complex fractions, geometry proofs, speed and rate problems, and extensive study methods. Parents frequently notice the escalation in difficulty can lead to anxiety or gaps in understanding, especially with math, motivating the demand for specialized advice to hone competencies and assessment methods. During this key period, in which each point matters toward secondary school placement, additional courses become indispensable for targeted reinforcement and building self-assurance. sec 1 tuition provides in-depth , PSLE-oriented classes in line with up-to-date MOE guidelines, incorporating practice tests, error correction workshops, and flexible instructional approaches to address personal requirements. Proficient educators highlight time management and complex cognitive skills, assisting pupils conquer even the toughest questions confidently. Overall, this dedicated help not only elevates achievements for the forthcoming PSLE and additionally cultivates focus and a love for mathematics which continues through secondary schooling plus more..

    Let's Geometrise: Triangles in the Lion City's Classrooms

    **

    Imagine you're at East Coast Park, looking at the iconic Merlion. You know it's the same Merlion your friend saw at Sentosa, even though they're not identical in size. That's similarity for you, Singapore-style! Now, let's dive into the world of triangles and see how we can prove similarity using AA and SSS postulates, straight from the Secondary 2 Math Syllabus, Singapore.

    **

    AA (Angle-Angle): When Angles Are in Sync

    **

    Remember the AA postulate? It's like having a best friend who laughs at the exact same jokes as you. No matter how different the triangles are, if two pairs of corresponding angles are congruent, they're similar. It's like finding your twin in the triangle world!

    • **Fun Fact**: The AA postulate is also known as the Congruent Corresponding Angles Postulate.
    • **History**: The AA postulate has been around since ancient times, with early mathematicians like Euclid using it in their geometry.

    **

    SSS (Side-Side-Side): When Sizes Matter

    **

    Now, let's talk about SSS. It's like comparing heights among your friends; if all corresponding sides of two triangles are proportional, they're similar. It's like having a magical growth potion that makes your friends grow at the same rate!

    • **Interesting Fact**: The SSS postulate is also known as the Side-Side-Side Similarity Theorem.
    • **Real-World Scenario**: Architects use SSS to design buildings that look similar but aren't identical, like the twin towers in Marina Bay Sands.

    **

    Congruence vs Similarity: What's the Difference?

    **

    Picture this: You and your best friend are both wearing the same uniform, but your friend is a head taller. You're similar (same uniform), but not congruent (different sizes). That's the difference between similarity and congruence!

    **

    What If...?

    **

    What if Singapore's landmarks were all similar but not congruent? Our cityscape would be a fascinating mix of sizes, like a giant 3D geometry puzzle!

    So, there you have it, Singapore parents and students! With these postulates, you're all set to prove similarity and conquer your Secondary 2 Math Syllabus, Singapore. Now go forth and make your mark in the world of triangles!

    **Disclaimer: This article contains less than 1% Singlish, as per your instructions.**

    " title="" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen>

    Check our other pages :

    Frequently Asked Questions

    Congruent figures are identical in size and shape, while similar figures have the same shape but not necessarily the same size.
    Two angles are congruent if they have the same measure. You can use angle measurements or corresponding side lengths to compare them.
    The SAS congruence theorem states that if two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.