Geometric Proportions

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

• x = 10

• x = 4

• x = 2

• x = 5

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? Hint: the figures are similar triangles.

• 8 feet

• 72 feet

• 36 feet

• 144 feet

Lance the alien is 5 feet tall.  His shadow is 8 feet long.  At the same time of day, a tree's shadow is 32 feet long.  What is the height of the tree?

• 20 feet

• 24 feet

• 29 feet

• 51 feet

Find missing side

• 5

• 7

• 9

• 11

Solve for X.

• 2 ft

• 3 ft

• 4 ft

• 6 ft

Which side length corresponds with EF?

• ML

• LM

• OL

• EH

Which proportion is true?

Which proportion is true?

Which proportion is true?

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.