Congruence and Similarity

Introduction to Congruence

Transformations and Congruence

Congruence in Triangles

Congruence in Quadrilaterals

Simple Proofs for Congruence in Triangles

Congruent Triangles (Investigation)

Find sides and angles with congruent relationships

Introduction to Similarity

Transformations and Similarity

Similarity in Triangles

Class IX

Congruence in Triangles

Interactive practice questions

Consider the following three triangles:

a

Which of the following triangles are congruent?

A

B

C

b

State the reason why the two previous triangles are congruent:

$AAS$AAS.

A

$RHS$RHS.

B

$SAS$SAS.

C

$SSS$SSS.

D

Easy

< 1min

Consider the following triangles:

Easy

< 1min

Consider the following triangles:

Easy

< 1min

Which pairs of these triangles are congruent?

Easy

< 1min

Outcomes

9.G.T.1

Two triangles are congruent if any two sides and the included angle of one triangle is equal to any two sides and the included angle of the other triangle (SAS Congruence). Two triangles are congruent if any two angles and the included side of one triangle is equal to any two angles and the included side of the other triangle (ASA Congruence). Two triangles are congruent if the three sides of one triangle are equal to three sides of the other triangle (SSS Congruence).

What is Mathspace

About Mathspace