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0 votes
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in Polygons by (44.3k points)

How many diagonals are there in pentagon?

(a) 5 (b) 7 (c) 6 (d) 10

1 Answer

+1 vote
by (58.8k points)
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Best answer

(a) 5

Explanation:

We know that to calculate number of diagonals in pentagon is

n × (n -3)/2

But here n=5

5 × (5-3)/2 =5

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