Unit 4 Review Quiz

A dilation is which of the following: 

• only an enlargement
• only a reduction
• either an enlargement or a reduction
• neither an enlargement nor a reduction

Definition: The figure after a transformation has occurred. 

• Pre-image
• Image
• Translation
• Reflection

Definition: The figure before a transformation has occurred. 

• Pre-image
• Image
• Translation
• Reflection

A dilation always produces a congruent figure.

• True
• False

A dilation always produces a similar figure. Similar figures have the same ______ but different ______. 

• measure; shapes
• sizes; shapes
• value; measures
• shape; sizes

Two ratios that are equal are called

• problems

• fractions

• proportions

What is a Ratio?

• A comparison of two quantities

• To multiply two fractions

• A number over another number

• Two decimals that can be multiplied

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7
• 7 to 5
• 5 to 12
• 7 to 12

The pet shop has 2 dogs, 4 cats, and 5 hamsters. What is the ratio of dogs to all pets?

• 2:4
• 2:5
• 2:11
• 11:2

Solve the proportion.

• n=6
• n=24
• n=7
• n=8