Ratios in Polygons

The polygons in each pair are similar. Find the scale factor of the smaller figure to the larger

figure.

• a

• b

• c

• d

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.

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

• congruent, proportional 

• proportional, congruent 

• congruent, congruent

• proportional, proportional

State if the polygons are similar.

• a

• b

State if the polygons are similar.

• a

• b

The polygons in each pair are similar. Find the scale factor of the smaller figure to the larger

figure.

• a

• b

Find the scale factor.

• 4:1

• 1:3

• 2:1

• 7:3

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

• x = 20

• x = 12

• x = 5

• x = 4

When figures are similar, their corresponding sides are__________________.

• congruent

• proportional

• invisible

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

• x = 10

• x = 4

• x = 2

• x = 5