Question

The exterior angle measure of a regular polygon is 20 degrees. How many sides does the polygon have? 9 16 18 20

Answer 1

HEYA!
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$number \: of \: sides \: of \: a \: regular \: polygon = \frac{360}{measure \: of \: \: exterior \: angle\: }$
Hence ,

= 360 / 20

= 18 sides

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Answer 2

Sum of all the exterior angles in any polygon is always 360º

Find the number of sides:

One exterior angles = 20º

Number of sides = 360 ÷ 20

Number of sides = 18

Answer: The polygon has 18 sides.