Length of Similar Figures

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

• x = 12

• x = 3

• x = 40

• x = 4

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

• x = 20

• x = 12

• x = 5

• x = 4

The polygons are similar. Find x.

• x = 2

• x = 6

• x = 4 

• x = 8

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

• x = 11

• x = 4.5

• x = 5

• x =4

The two right triangles below are similar. What is x, the missing side length in triangle DEF? 

• 3.75

• 9.75

• 10

• 12

Two objects that are the same shape but not the same size are _______.

• Congruent

• Vertical

• Similar

• Complementary 

Solve for X.

• 2 ft

• 3 ft

• 4 ft

• 6 ft

A tree is 12 feet tall and casts a shadow 9 feet long. A building nearby casts a shadow that measures 24 feet. How tall is the building? (Draw a picture, set up a proportion)

• 24 feet

• 21 feet

• 27 feet

• 32 feet

Find the height of the person using what you know about similar triangles.

• 4 ft

• 6.25 ft

• 1.25 ft

• 5.75 ft

Solve for x.

• 2

• 4.5

• 7

• 4