Perimeter and Area of Similar Polygons

The ratio of perimeters of two similar figures is ________________ the scale factor.

• the same as

• the square of

• twice

• greater than

The scale factor of two similar figures is equal to the ratio of _________.

• corresponding angles

• corresponding sides

• any two sides

• areas

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Which of the following are equal to the ratio of corresponding sides of two similar figures? Select all that apply.

• ratio of perimeters

• ratio of areas

• scale factor

• ratio of corresponding angles

Given the ratio of corresponding sides of two similar figures is 9:4, what is the ratio of perimeters?

• 3:2

• 9:4

• 81:16

• can not be determined

Given the ratio of corresponding sides of two similar figures is 9:4, what is the ratio of areas?

• 3:2

• 9:4

• 81:16

• can not be determined

Given ABC ~ DEG and $\frac{BC}{EG}=\frac{5}{6}$  , what is the scale factor of ABC to DEG?

• 5:6

• 6:5

• 25:36

• can not be determined

Tags

CCSS.7.G.A.1

Given JKL ~ PQR and $\frac{JL}{PR}=\frac{7}{3}$  what is the ratio of areas of JKL to PQR? 

• 7:3

• 49:9

• 14:6

• can not be determined

Given SKY ~ RUN and SK = 16, RU = 9, and UN = 10 what is the scale factor?

• 4:3

• 16:9

• 8:5

• 9:10

Tags

CCSS.7.G.A.1

Given ABC ~ DEG and $\frac{BC}{EG}=\frac{16}{9}$  , what is the ratio of perimeters of ABC to DEG?

• 4:3

• 16:9

• 256:81

• can not be determined

Given the ratio of areas of two similar figures is 100:9, what is the ratio of corresponding sides?

• 10:3

• 100:9

• 1000:81

• can not be determined