Unit 4 Test Review

Front

What effect will a scale factor of 3/4 have on a figure?

Back

Shrink

Front

If two figures are similar, their angles are ______.

Back

congruent

Front

State the postulate that proves these triangles are similar: SSS~, SAS~, AA~, Not similar.

Back

SSS~

Front

Find the missing length: 21, 18, 16, 24.

Back

21

Front

The pair of figures is similar. Find the missing side: x = 20, x = 12, x = 5, x = 4.

Back

x = 5

Front

What is the definition of similar figures?

Back

Figures that have the same shape but not necessarily the same size.

Front

What does the AA similarity postulate state?

Back

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

Front

What is the SSS similarity postulate?

Back

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

Front

What is the SAS similarity postulate?

Back

If two sides of one triangle are proportional to two sides of another triangle and the included angles are congruent, then the triangles are similar.

Front

How do you find the scale factor between two similar figures?

Back

Divide the length of a side of one figure by the corresponding side of the other figure.