Similar Figures Cartoons

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

• 3.75

• 9.75

• 10

• 12

Sides in similar figures must be proportional.  

• True

• False 

Find missing side

• 5 m

• 7 m

• 9 m

• 11 m

Solve for X.

• 2 ft

• 3 ft

• 4 ft

• 6 ft

Find the perimeter of the large triangle. (First find the missing side length)

• 24

• 36

• 12

• 54

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.

• 3

• 5

• 6

• 9

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

• x = 10

• x = 4

• x = 2

• x = 5

Using a proportion, find the height of the tree.

• x = 0.0625 ft.

• 16 ft

• x = 16 ft.

Tell whether the two figures are similar. Explain your reasoning. (Hint: are they proportional?)

• Yes, similar because they are the same shape and side lengths are proportional.

• No, not similar because they are the same shape, but side lengths are not proportional.

• Yes, same shape

• No, different sizes