Similar Figures and Indirect Measurement

Find missing side

• 5
• 7
• 9
• 11

For the pair of similar figures, find the length of each side marked with a variable.

• 1.8 in
• 2.1 in
• 9.8 in
• 9.3 in

What is x?

• 143
• 91
• 7
• 18.9

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

• 74
• 100
• 104
• 108

• 6.25
• 5.5
• 6
• 5.75

All angles in similar figures are congruent.  

• True
• False

Which side length corresponds with EF?

• ML
• LM
• OL
• EH

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.

Sides in similar figures must be proportional.  

• True
• False