Solving Missing Side in Similar Triangles

If two figures are similar, the corresponding sides are ______________.

• equal

• congruent

• proportional

• none of these

Complete each proportion.
AB / BM  =  ? / CD

• BC

• AC

• MD

• MC

Marvin's son is 3 ft tall. He casts a shadow of 1 foot. Marvin casts a shadow of 2.5 ft. How tall is Marvin?

• 3 ft

• 7.5 ft

• 1.2 ft.

• 0.8 ft.

The polygons in each pair are similar. Find the missing side length.

• 9

• 5

• 3

• 7

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

Two similar right triangles were created. One triangles gives measurements of the light post and the other one gives measurements of a building. Find the height of the building.

• 74

• 100

• 104

• 108

The two triangles are similar. Find the distance d across the river?

• 81m

• 18m

• 16m

• 25m

What is a possible equation for solving for y?

• y = 48

Solve for x.

• 100

• 1

• 0.1

• 10

Use the scale drawing to create a proportion and find the height of the tree.

• 12.5 feet

• 8 feet

• 200 feet