Perimeter of Regular and Irregular Shapes

Perimeter---the distance around  a figure

Regular shapes-- squares, rectangle, triangles

Irregular Shapes--any shape that does not have equal sides

To find the Perimeter of shapes that provides side lengths...ADD ALL THE SIDE LENGTHS.

4 + 5 + 8 + 3=  20                The perimeter of the shape is 20 inches.



To find the Perimeter of a shape that does not provide side lengths, but does provide units...COUNT THE UNIT SEGMENTS.

UNIT SEGMENTS---THE OUTSIDE OF EACH UNIT