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Ad libitum [116K]
4 years ago
9

Please help, will give brainliest!!

Mathematics
1 answer:
bogdanovich [222]4 years ago
5 0

Answer:

15°

Step-by-step explanation:

sum of exterior angles=360°

each angle=360/24=15°

b

20 ×n=360

n=360/20=18

18 sides

c.

(n-2)×180=174n

180n-174n=360

6 n=360

n=360/6=60

number of sides =60

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