Topics
Congruence and Similarity
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India
Class IX

Introduction to Similarity

Lesson
Practice

Interactive practice questions

Which pair of triangles are similar?

Select the two triangles that are similar.

A

B

C

D
Easy
< 1min

The smaller quadrilateral has been reflected, then enlarged and finally rotated.

Easy
1min

Dave wants to transform a shape but wishes it to remain similar to the original shape. Which of these transformations is he able to perform, while maintaining similarity?

Easy
< 1min

Write the following using mathematical symbols:

$\triangle ABC$△ABC is similar to $\triangle DEF$△DEF.

Easy
< 1min
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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).

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