Math Homework. Do It Faster, Learn It Better.
Perimeter
Theperimeterof a polygon (or any other closed curve, such as a circle) is the distance around the outside.
Here are some formulas for the perimeters of common plane figures.
|
||
Shape
|
Formula
|
Variables
|
Square |
|
is the length of the side of the square. |
Rectangle |
|
andare the lengths of the rectangle's sides (length and width). |
Triangle |
|
, andare the side lengths. |
Right Triangle, with legsand(seePythagorean Theorem) |
|
andare the lengths of the two legs of the triangle |
Circle |
|
is the radius andis the diameter. |