Similarity Proportions Congruence Slides

Solve for x. The polygon in each pair are similar.

• 6

• 10

• 12

• 11

State if the triangles in each pair are similar. If so, state how you know they are similar and complete the similarity statement.

• not similar

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

• x = 12

• x = 3

• x = 40

• x = 4

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

• x = 20

• x = 12

• x = 5

• x = 4

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

• x = 1

• x = 3

• x = 9

• x = 5

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

If two polygons are similar, then the corresponding side lengths are ___________.

• congruent

• similar

• equal

• proportional

If two polygons are similar, then the corresponding angles are ___________.

• congruent

• similar

• equal

• proportional

Gwen scans a photo that is 4 in. wide by 6 in. tall into her computer. If she scales the height down to 3 in., how wide should the similar photo be?

• 3 in

• 2 in.

• 4 in

• 1 in

A picture of a school’s mascot is 18 in. wide and 24 in. long. It is enlarged proportionally to banner size. If the width is enlarged to 54 in., what is the length of the banner?

• 72 in

• 60 in

• 62 in

• 80 in