Perimeter of a Polygon Given Side Lengths

Find the perimeter of the large triangle.

• 12

• 15

• 24

• 36

The figures are similar. Find the perimeter of the rectangle RSTU.

• 21

• 33

• 66

• 99

The figures are similar. What is the ratio of their perimeters?

• 18/24

• 3/4

• 1/2

• 36/24

If two similar polygons have perimeters in the ratio 3:7, and the perimeter of the smaller polygon is 18 units, what is the perimeter of the larger polygon?

• 42

• 54

• 14

• 126

The length of the outline of a shape

• Perimeter

• Area

• Convex

• Concave

Find the perimeter of the given polygon.

• 30

• 36 in

• 30 in

• 33 in

Tags

CCSS.3.MD.D.8

Find the perimeter of the given polygon.

• 19 gnus

• 18 in

• 19 in

• 19 ni

Tags

CCSS.3.MD.D.8

Find the perimeter of the given polygon.

• 15 ft

• 150 ft

• 105 ft

• 120 ft

Tags

CCSS.3.MD.D.8

To find the perimeter of any figure

• Add the lengths of all the sides

• Multiply the lengths of all the sides

Tags

CCSS.3.MD.D.8

Two similar polygons have side lengths in the ratio of 2/3. What is the ratio of their perimeters?

• 2/3

• 4/9

• It depends on the side lengths.

• It depends on how many sides there are.