Are They Similar Figures

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?

• 144 feet

• 72 feet

• 36 feet

• 8 feet

Complete each proportion.
CB / DM  =  AC / ?

• BM

• MA

• BC

• AD

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

• Congruent

• Vertical

• Similar

• Complementary 

Tell whether the two figures are similar. Explain your reasoning.

• 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

Tell whether the two figures are similar. Explain your reasoning.

• 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

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

• x = 1

• x = 3

• x = 9

• x = 5

The polygons are similar.
Find x.

• x = 2

• x = 6

• x = 4 

• x = 8

Are the following similar?
Why or why not?

• Yes

• No, the corresponding angles are not equal.

• No, corresponding sides are NOT in proportion.

• i dont know

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

• x = 20

• x = 12

• x = 5

• x = 4

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

• x = 12

• x = 3

• x = 40

• x = 4