Perimeter
Definition
The perimeter of a geometric figure is the distance around the edge of the figure. Perimeter is often denoted by P. The perimeter of a circle is called its circumference.
Formulas
- Square: , where is the side length.
- Rectangle: , where is the length and is the width.
- Circle - , where is the radius.
- Regular geometric figure with sides: , where is the side length.