How To Work Out The Number Of Sides Of A Polygon Given The Sum Of Interior Angles? скачать в хорошем качестве

How To Work Out The Number Of Sides Of A Polygon Given The Sum Of Interior Angles?

In this video you will be shown how to work out the number of sides of a polygon given the sum of interior angles. To do this you will need to use the formula S=(n-2)*180. Where S is the sum of interior angles and n is the number of sides. To get the answer divide the sum of interior angles by 180 and then add on 2. So in example 1, you are asked to work out the number of sides given the sum of interior angles of 1080. First divide 1080 by 180 to give 6, then add on 2 to give 8. So the polygon has 8 sides and so is an octagon. In example 2, you need to work out the number of sides given the sum of interior angles of 2160. First divide 2160 by 180 to give 12, and 12 add 2 is 14. So the polygon has 14 sides.