The lessons below will show you how to calculate
the perimeter of the following 2D figures (including the circumference of a circle):
We will learn how to find the perimeter for each
these figures and will see some examples on
using their respective perimeter formula.
Now, perimeter is quite simple. In fact, after
you have understand the properties of these shapes,
it is not necessary to memorize the perimeter
formulas at all. This is because with a little
bit of thinking, you can easily derive these
formulas when needed.