Congruent triangle criteria

Overview

Explore SSS, SAS, and ASA corresponding parts.

Explanation

Congruent figures match exactly: corresponding sides and angles equal.
Common tests: SSS, SAS, ASA, AAS; right triangles also HL.
Order vertices carefully so sides and angles correspond.

How to use

Pick a criterion, drag vertices or the copy, and rotate to match marks.

Knowledge points

• Congruence
• Triangles