Geometry: Unit 6 Test Review

Solve the proportion for x:
x/12.5 = 12/5

• 4.8

• 30

• 21

• 12.5

Solve the proportion for y:

2y+2/12 = 9y-1/39

• 1/3

• 5/2

• 3

• 4

In a bag of marbles, the ratio of green marbles to yellow marbles is 2:3. There are 12 yellow marbles. How many green marbles are there?

• 8

• 4

• 6

• 3

The formula for scale factor is SF = NEW/OLD.

• True

• False

Fill in the blank. Two objects that are the same shape but not the same size are ____?

Similar figures have corresponding sides that are_____?

• Congruent

• Proportional

• Equal

Similar figures have corresponding angles that are____?

• Proportional

• Congruent

• Obtuse

• Acute

The figures are similar. Solve for y.

• 1/2

• 11

• 2/5

• 2

Are the figures similar? Why or why not?

• No, the ratios of corresponding sides are not the same.

• Yes, the corresponding angles are congruent.

• No, the corresponding angles are not congruent.

• Yes, the ratios of corresponding sides are the same.

Find the scale factor.

• 3/4

• 4/3

• 9/8

• 8/9