How many diagonals are there in an octagon? - Vidyadip

MCQ

How many diagonals are there in an octagon?

A
24
B
28
C
20
D
36

✓

Answer

(c) 20
Explanation: No. of diagonals in a polygon of n sides $=\frac{1}{2} n(n-3)$,
Put n = 8, we get 20.

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