Congruence Criteria for Triangles

Here is a display poster or print out for your learners showing the illustrated congruence criteria for triangles: SSS, ASA, SAS, AAS and RHS.

Congruent Triangles | Triangle Congruence Rules Explained

📚 Understanding Triangle Congruence
Two triangles are congruent if they have the same size and shape, meaning their corresponding sides and angles are equal. This printable teaching resource provides a visual explanation of the five key congruence rules used in geometry.

Triangle Congruence Criteria

A pair of triangles is congruent if they satisfy one of the following conditions:

🔺 SSS (Side-Side-Side) – All three sides are equal.
🔺 ASA (Angle-Side-Angle) – Two angles and the included side are equal.
🔺 SAS (Side-Angle-Side) – Two sides and the included angle are equal.
🔺 AAS (Angle-Angle-Side) – Two angles and a non-included side are equal.
🔺 RHS (Right Angle-Hypotenuse-Side) – A right-angled triangle with equal hypotenuse and one other side.

Why Use This Resource?

✔ Clear visual examples – Helps students identify congruence conditions easily.
✔ Step-by-step explanation – Demonstrates how to apply each rule correctly.
✔ Printable PDF Format – Perfect for classroom teaching or revision.