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Today we are going to use the sides of a polygon to find its perimeter . Raise your hand if you’ve ever played handball or kickball? How do you know when the ball is out of bounds? In math, that line around the area is called a perimeter .
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Today we are going to use the sides of a polygon to find its perimeter.
Raise your hand if you’ve ever played handball or kickball? • How do you know when the ball is out of bounds? In math, that line around the area is called a perimeter.
When you add up all the sides of a polygon and add them together, this measurement is called the perimeter.
Why is it important to know what a perimeter is? • In order to know how long to build the fence around the school, we have to know the perimeter. • In order to know how long the border around the bulletin board is, we have to first know the perimeter.
What do you call it when you measure all the sides of a polgon? • How do you find a perimeter of a polygon? • What did you learn today?