Perimeter and Area

6.3

Perimeter and Area

We will learn to determine the perimeter of a polygon shape with up to eight sides.

	PERIMETER

	The perimeter is the sum of the lengths of all the sides of a closed two-sided figure where the ends of two or more lines meet the other ends.

	The standard symbol for perimeter in mathematics is the letter P.

Perimeter of a Square / Cube

EXAMPLE:

\(\text{P}=a+a+a+a=4a\)

Perimeter of a Rectangle

EXAMPLE:

\(\text{P}=a+b+a+b=2a+2b\)

Perimeter of an Equilateral Triangle

EXAMPLE:

An equilateral triangle has 3 equal sides.

\(\text{P}=a+a+a=3a\)