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4 years ago

8

Question 10-12 geometry

1 answer:

Diano4ka-milaya [45]4 years ago

7 0

10)
(n-2) x 180 = 2160
n - 2 = 12
n = 14

answer
C. 14

11)
interior angle = [(11 - 2) x 180] / 11
= (9 x 180) / 11
= 1620/11
= 147.27

exterior angle = 180 - 147.27 = 32.72

12)
heptagon has 7 sides, n = 7
interior angle = [(5 x 180)/7 = 900 / 7 = 128.57

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