Overview
Triangles and Constructions

Congruent Triangles

 Video Tutorial

Key Aspects:
  • Congruent Triangles
  • Criteria for Congruency: SSS, SAS, ASA, RHS
  • Limitations of Congruency Criteria in Non-Right-Angled Triangles
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 Revision Cards

1) Congruent Triangles

Congruent triangles criteria with examples showing two triangles with same side lengths and angle sizes.

2) Four Criteria to Identify Congruent Triangles

Diagram showing the criteria for identifying congruent triangles: SSS, SAS, ASA, and RHS with corresponding labelled triangles.

3) SSS Criteria

Identifying congruent triangles using SSS (side, side, side) criteria with two triangles both having sides of 3 cm, 5 cm, and 6 cm.

4) SAS Criteria

Identifying congruent triangles using SAS (Side, Angle, Side) rule with two triangles having sides of 3 cm, 5 cm, and an included angle of 70 degrees.

5) ASA Criteria

Identifying congruent triangles using ASA (Angle, Side, Angle) with two example triangles showing two angles and the included side as the same.

6) RHS Criteria

Identifying congruent triangles using RHS criteria with examples of right-angle triangles having the same hypotenuse and one identical side.

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 Exercises

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