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Question

Question: The no. of diagonals in a polygon of 10 sides is...

The no. of diagonals in a polygon of 10 sides is

A

35

B

25

C

55

D

45

Answer

35

Explanation

Solution

No. of diagonals = 10C2−10=10x92−10=3510C_{2} - 10 = \frac{10x9}{2} - 10 = 35.