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kati45 [8]
4 years ago
11

How many sides does a regular polygon have if each exterior angle measures 20°?

Mathematics
2 answers:
Stolb23 [73]4 years ago
6 0
Sum of exterior angles of any polygon is 360 degrees. 
<span>Each exterior angle of a regular polygon = 360/n where n is the number of sides. </span>
<span>So, n = 360/20 = 18. Your answer is D


Hope this helps.</span>
andreyandreev [35.5K]4 years ago
6 0
The sum of the extrior angles always adds to 360
each exterior angle has to have a side to go with it

so
360/20=18 sides

answer is D
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