Proportionality Scale Drawing

two figures that are the same shape and have proportional side lengths

• scale factor

• similar figures

• scale drawing

• corresponding sides

the ratio of two corresponding sides in a set of similar figures

• dilation

• scale drawing

• scale factor

• similar figures

a drawing of a real object that is reduced or enlarged by a scale

• dilation

• similar figures

• scale factor

• scale drawing

The two rectangles are scale drawings. What is the measurement of x?

• 21

• 1.25

• 20

• 4

The scale drawing car length is 3 cm. If the scale is 1 cm:4 ft, what is the actual car length?

• 12 feet

• 16 feet 

• 10 feet

• 4 feet

Write an equation.

• y=7.5x

• y=7x

• y=10x

• y=10.5x

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

Solve the proportion.

• q=2

• q=9

• q=4.5

• q=6

If the pole measures 12 inches, how tall is the actual pole?

• 16 feet

• 3 feet

• 48 feet

• 9 feet

On a map, Denver to Chicago is 3 inches.

If the scale is 1 inch = 300 miles, find the actual distance.

• 300 miles

• 1000 miles

• 900 miles

• 600 miles