Similar Triangles Proportions

Complete each proportion.
CB / DM  =  AC / ?

• BM

• MA

• BC

• AD

Determine if the triangles are similar. Justify.

• Yes, by SSS.

• Yes, by SAS. Scale Factor is 1:2.

• Yes, by SAS. Scale Factor is 3:1.

• No, not similar.

To measure the distance across a pond, a surveyor locates points A, B, C, D, and E as shown.  What is AB to the nearest meter?

• 10

• 12

• 15

• 18

Use the information in the diagram to determine the height of the tree.

• 80 feet

• 320 feet

• 40 feet

• 160 feet

How do these triangles appear to be similar?

• AA

• SAS

• SSS

• Not Similar

How do these triangles appear to be similar?

• AA

• SAS

• SSS

• Not Similar

Are the triangles similar?

• Yes

• No

In similar Polygons, corresponding sides are ___ and corresponding angles are ___. (Fill in the blanks)

• congruent, proportional 

• proportional, congruent 

• congruent, congruent

• proportional, proportional

What is the measure of x?

• 12

• 15

• 6

• 9

Solve for x.

• x = 5

• x = 3

• x = 14

• x = 1