Glencoe Course 3 Chapter 7

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

• Congruent
• Vertical
• Similar
• Complementary 

The __________ is the ratio of a length of the image to the corresponding length on the original figure.

• reduction
• enlargement
• scale factor
• center of dilation

The triangles are similar. Find missing side

• 5

• 7

• 9

• 11

Find the perimeter of the large triangle.

• 24
• 36
• 12
• 54

Tags

CCSS.6.G.A.3

Find the height of the tree.

• 8 ft
• 12 ft
• 13 ft
• 15 ft

Are the following similar? Why or why not?

• Yes

• No, the corresponding angles are not equal.

• No, the ratios of the corresponding sides are not equal.

• No, they are congruent.

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

• x = 9

• x = 63

• x = 7

• x = 28

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

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Are the following similar? Why or why not?

• Yes

• No, the corresponding angles are not equal.

• No, the ratios of the corresponding sides are not equal.

• No, they are congruent.

Find missing side for the similar triangles.

• 5

• 7

• 9

• 11