In this module, you will explore the concepts of congruent and similar triangles. You have learned that congruent means "the same." Congruent triangles have the same shape and size. Similar triangles, on the other hand, have the same shape but are different in size. Also, you will learn how to determine if two triangles are congruent or similar. So put your thinking caps on and get ready to dive further into triangle territory.
Getting Started
How familiar are you with congruent and similar shapes? Test your knowledge in this non-graded interactivity. You will be asked to identify figures that are congruent and similar. Click the player button to get started.
Key Vocabulary
To view the definitions for these key vocabulary terms, visit the course glossary.
Angle-Angle Similarity
Angle-Angle-Side Congruence
Angle-Side-Angle Congruence
congruent polygons
corresponding
hypotenuse
Hypotenuse-Leg Congruence
leg
Side-Angle-Side Congruence
Side-Angle-Side Similarity
Side-Side-Side Congruence
Side-Side-Side Similarity
similar polygons
similarity ratio