Similar Triangles Practice

Front

If two triangles are similar, the corresponding sides are ______________.

Back

proportional

Front

Which of the following is NOT true about similar triangles? A) Similar triangles always have the same size. B) Similar triangles always have corresponding angles that are equal. C) Similar triangles always have corresponding sides that are proportional. D) None of these.

Back

A) Similar triangles always have the same size.

Front

If two triangles are similar, their angles are ______.

Back

congruent

Front

Solve for the question mark in similar triangles: ?/8 = 18/24.

Back

18

Front

What is the measure of x in similar triangles if x/12 = 9/15?

Back

9

Front

Definition: Similar Triangles

Back

Triangles that have the same shape but may differ in size; corresponding angles are equal and corresponding sides are proportional.

Front

The ratio of the lengths of corresponding sides of similar triangles is called ______________.

Back

the scale factor.

Front

True or False: All corresponding angles in similar triangles are equal.

Back

True

Front

If triangle ABC is similar to triangle DEF, then angle A = ______________.

Back

angle D

Front

If the sides of triangle XYZ are 3, 4, and 5, and the sides of triangle PQR are 6, 8, and 10, are these triangles similar?

Back

Yes, they are similar because the sides are in proportion (1:2).