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

Introduction to Congruence

Interactive practice questions

Given that $ABCD\equiv EFGH$ABCD≡EFGH, which angle of $EFGH$EFGH corresponds to $\angle ABC$∠ABC?

$\angle EFG$∠EFG

A

$\angle FGH$∠FGH

B

$\angle GHE$∠GHE

C

$\angle FEH$∠FEH

D

Easy

< 1min

Given that $ABCDEFGH\equiv MNOPIJKL$ABCDEFGH≡MNOPIJKL what side of $MNOPIJKL$MNOPIJKL corresponds to $DE$DE?

Easy

< 1min

Given that $ABCDEF\equiv GHIJKL$ABCDEF≡GHIJKL, what side of $GHIJKL$GHIJKL corresponds to $CD$CD?

Easy

< 1min

Given that these shapes are congruent, find the value of $x$x.

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