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POLYGONS

SUM OF OUTER ANGLES

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STORY

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STORY

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STORY

Find the sum of angles inclined to the frame of the pentagonal clock gifted by Appu to Ammu on her birthday

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OUTER ANGLES

 The angle between a side of a polygon and an extended adjacent side is called outer angle of a polygon

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OUTER ANGLES

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POLYGON

NO. OF LINEAR PAIR

SUM OF INNER ANGLES

SUM OF OUTER ANGLES

TRIANGLE

3

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QUADRILATERAL

4

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PENTAGON

5

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HEXAGON

6

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POLYGON

NO. OF LINEAR PAIR

SUM OF INNER ANGLES

SUM OF OUTER ANGLES

HEPTAGON

7

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OCTAGON

8

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NONAGON

9

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DECAGON

10

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SUM OF OUTER ANGLES

The sum of outer angles or exterior angles of a polygon is 360ᵒ

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WORKSHEET

  • Appu wanted to make an 18 sided polygon for craft purpose. All angles should be equal. Then what would be the values of each outer angles?

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HOME ASSIGNMENT

  • The sum of outer angles of a polygon is twice the sum of inner angles. How many sides does it have?