Matching Proportions to Similar Figures

The pair of figures is similar. Find the missing side.

• x = 10

• x = 4

• x = 2

• x = 5

To find the height of a very tall pine tree, you place a mirror on the ground and stand where you can see the top of the pine tree.  How tall is the tree? Hint: the figures are similar triangles.

• 8 feet

• 72 feet

• 36 feet

• 144 feet

Solve for f.

• 6

• 4

• 3

• 8

Find y.

• 144

• 18

• 72

• 12

Figure I and Figure II are similar pentagons. Which proportion must be true?

Solve for x. The two figures are similar.

• x = 6

• x = 9

• x = 7

• x = `0

The pair of figures is similar. Set up and solve a proportion to find the missing side length.(x)

• x = 20

• x = 12

• x = 5

• x = 4

• F

• G

• H

• J

• A
• B
• C
• D

• A
• B
• C
• D