Solving Similar and Congruent Polygons

Find missing side

• 5

• 7

• 9

• 11

The triangles are similar, solve for the question mark.

• 8

• 12.5

• 18

• 24

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

Find the similarity ratio for the smaller polygon to the bigger polygon in simplest form.

• 3 : 5

• 15 : 25

• 1 : 2

• 3 : 7

The polygons shown are similar. Solve for the value of x.

• 8

• 10

• 0.5

• 4

The polygons shown are similar. Determine the measure of the missing side.

• 12

• 7

• 6

• 28

Are the triangles similar?

• Yes

• No

Are the triangles similar?

• Yes

• No

Which triangles are similar to triangle A?

• B

• C

• Both

• None