Congruence and Similarity

Consider the given triangles.

a

Are the two triangles similar?

Yes

A

No

B

Yes

A

No

B

b

Which rule confirms similarity?

Two pairs of angles are equal.

A

The ratio of three pairs of corresponding sides is equal.

B

The ratio of two pairs of corresponding sides is equal, and the pair of included angles are also equal.

C

Two pairs of angles are equal.

A

The ratio of three pairs of corresponding sides is equal.

B

The ratio of two pairs of corresponding sides is equal, and the pair of included angles are also equal.

C

Easy

Less than a minute

Sign up to try all questions

Recognise when shapes are similar and use proportional reasoning to find an unknown length

Apply geometric reasoning in solving problems