Module 3 Vocabulary

What is a dilation?

• A flip

• A slide

• A turn

• A change in size

A dilation is which of the following: 

• only an enlargement
• only a reduction
• Either an enlargement or a reduction
• Neither an enlargement or a reduction

A dilation produces a similar figure

• True
• False

A dilation produces a congruent figure

• True

• False

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True
• False

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True
• False

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½
• ¼
• 4
• 2

The ratio of the measures of each pair of corresponding sides in two similar figures is called

• dilation

• scale factor

• angles

• congruent

collinear

• lying on the same line

• where two lines cross

• two similar lines

• congruent triangles

If two triangles have two pair of congruent angles, then the triangles are similar.

• Rules of Similarity

• Scale factor

• Angle-Angle Criterion

• Rules of Congruency