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Vitek1552 [10]
3 years ago
11

My answer is incorrect.. I need help and explanation.. Thank you

Mathematics
1 answer:
Goshia [24]3 years ago
8 0
Octagon:
= [(8-2)×180]÷8
= 135

Angle of LMN is:
= 360-135-60
= 165

Angle of EMN is:
= 180÷3
= 60

The number of side is :
[(n-2)×180]÷n = 165
(180n-360)÷n = 165
180n-360 = 165n
180n-165n = 360
15n = 360
n = 360÷15
n = 24

So, the number of side of the regular polygon R is 24.
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