1. Perimeter! What’d you say? Yeeeah….perimeter. The distance around straight edged THINGS! We call ‘em POLYGONS!

2. Key Terms Polygon Perimeter Property Pentagon ﻣﻀﻠﻊ اﻟﻤﺤﻴﻂ ﺧﺎﺻﻴﺔ ﺧﻤﺎﺳﻲ اﻷﺿﻼع Ex: What are the properties of an octagon? The properties of an octagon are that it is a eight-sided, straight-edged polygon. Octa means eight, and gon means shape. Ex: A pentagon is a five-sided polygon. Penta means five and gon means shape. Ex: The perimeter of a polygon is the distance around an object. Ex: a polygon is a shape that has straight edges. All the shapes on page 1 are polygons.

3. Finding Perimeter 5 5 5 5 P = 20 8 8 8 10 P = 34 5 5 5 5 1 5 1 7 7 1 1 P = 43

4. Finding Perimeter with missing lengths 10 P = 40 4 4 4 ? P = 17 ? 5 5 5 ? 5 P = 25 10 5 5

5. How Do You Find The Perimeter? A) Find the product of the sides. B) Find the difference of the sides. C) Find the sum of the sides. D) Take a wild guess! Multiply Subtract Add