Scale Factor and Dimensional Analysis

A common ratio for pairs of corresponding sides of similar figures.

• Scale Factor

• Rate

• Scale Drawing

• Cross Products

The ratio of the size of a figure on a drawing to the actual size of the figure.

• Scale

• Cross Products

• Unit Rate

• Ratio

A drawing that shows a real object with accurate sizes except they have all been reduced or enlarged by a certain amount (called the scale).

• Cross Prodcuts

• Corresponding Sides

• Unit Rate

• Scale Drawing

What is the scale factor of the dilation?

• 2

A scale drawing of Mt. Marcy is 17.8 inches high. Determine the actual height of Mt. Marcy if the scale used for the drawing was 1.5 inches = 450 feet.

• 8,010 feet

• 5,340 feet

• 12,015 feet

Choose the correct scale factor:

• 2.5

• 1.5

• 3.5

• 4

The two pyramids shown are similar. If the smaller pyramid has a height of 21 meters, then what is the height of the larger pyramid?

• 11 meters

• 81.49 meters

• 33 meters

• 7 meters

The scale for a flagpole is 3 in = 8 ft.  If the drawing of the flagpole is 7.5 inches in height, how tall is the ACTUAL flagpole?

• 180 feet

• 3.1 feet

• 20 feet

• 9 feet

What is the scale factor of this dilation?

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

• 21

• 1.25

• 20

• 4