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How to do this question plz answer me ​

How to do this question plz answer me ​-example-1

1 Answer

2 votes

Answer:

18 will be the number of sides.

Explanation:

As we know that the sum of exterior angles of a polygon is 360°.

The formula is:

  • The exterior angle of a polygon = 360 ÷ number of sides

As each exterior angle of a regular polygon is 20°.

so putting the value exterior angle 20° in the formula

The exterior angle of a polygon = 360 ÷ number of sides

20 = 360 ÷ number of sides

20 = 360/number of sides

so the number of sides will be:

number of sides = 360/20

= 18

Therefore, 18 will be the number of sides.

User David Shaked
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