Similar Triangles (MCQ)

Front

What are similar triangles?

Back

Triangles that have the same shape but may differ in size. Their corresponding angles are equal, and their corresponding sides are in proportion.

Front

What is the Angle-Angle (AA) criterion for similarity?

Back

If two angles of one triangle are equal to two angles of another triangle, then the triangles are similar.

Front

What is the Side-Side-Side (SSS) criterion for similarity?

Back

If the corresponding sides of two triangles are in proportion, then the triangles are similar.

Front

What is the Side-Angle-Side (SAS) criterion for similarity?

Back

If one angle of a triangle is equal to one angle of another triangle and the sides including these angles are in proportion, then the triangles are similar.

Front

How do you find the scale factor of similar triangles?

Back

The scale factor is the ratio of the lengths of corresponding sides of the two similar triangles.

Front

If triangle ABC is similar to triangle DEF, and AB = 6 and DE = 12, what is the scale factor?

Back

The scale factor is 2 (12/6).

Front

If the scale factor of two similar triangles is 3, what is the ratio of their areas?

Back

The ratio of their areas is 9 (3^2).

Front

What is the relationship between the angles of similar triangles?

Back

The corresponding angles of similar triangles are equal.

Front

If triangle ABC is similar to triangle DEF, and angle A = 30°, what is angle D?

Back

Angle D = 30°.

Front

How do you solve for a missing side in similar triangles?

Back

Set up a proportion using the lengths of corresponding sides and solve for the unknown.