This lesson introduces the idea of congruency applied to triangles. It brings examples of ASA, SSS, and SAS triangle postulates to check the triangles' congruency.

Practice Completing Proofs Involving Congruent Triangles Using ASA or AAS with practice problems and explanations. Get instant feedback, extra help and step-by-step explanations. …

Learn how to prove triangles are congruent using ASA or AAS, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Learn how to use the ASA congruence theorem, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Learn more about SAS, ASA, and SSS triangle congruence postulates. Test how much you know about these differing postulates by answering the...

The ASA postulate is a postulate in geometry that gives us criteria of two triangles that must be met in order for the two triangles to be congruent.... See full answer below.

What are the SSS, SAS, ASA, AAS, and HL? The side-side-side (or SSS) postulate states that if all three sides of a triangle are congruent to another triangle, then the triangles are congruent.

AA Similarity Postulate and Theorem state that in order for two triangles to be considered similar, two corresponding angles in two triangles must be congruent.

Learn about the ASA, SSS, and SAS triangle postulates with our 5-minute video lesson. Master its properties and see examples, then take an optional quiz after!

Test your understanding of triangle congruence by using CPCTC to explain statements about triangles. Use the worksheet to identify study points to...