Similar Figures

Solve for X.

• 2 ft
• 3 ft
• 4 ft
• 6 ft

• 4 ft
• 15 ft
• 18 ft
• 2 ft

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

Matching sides are called

• Corresponding Sides
• Corresponding Angles
• The Same
• Congruent Sides

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.

A rectangular garden is 45 ft wide and 70 ft long. On a blueprint, the width is 9 in. Identify the length on the blueprint. 

• 7 in
• 9 in
• 12 in
• 14 in

Find the perimeter of the large triangle.

• 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

When you multiply by a scale factor over 1, it will result in ...

• a reduction.
• the same size.
• an enlargement.
• a different shape.

When you multiply by a scale factor less than 1, it will result in ...

• a reduction.
• the same size.
• an enlargement.
• a different shape.