What is the total number of diagonals in an octagon?
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20 diagonals in a regular octagon
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The formula for calculation of diagonal of any polygon is →
n(n-3)/2
Where, n = number of sides.
So , octagon has 8 sides , Number of diagonals →
8(8-3)/2
=( 8×5)/2
= 40/2
= 20
Answer→ so the octagon has 20 diagonals.
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n(n-3)/2
Where, n = number of sides.
So , octagon has 8 sides , Number of diagonals →
8(8-3)/2
=( 8×5)/2
= 40/2
= 20
Answer→ so the octagon has 20 diagonals.
_____________________________
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