How many diagonals are in a regular octagon? Compute it with the help of formula
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Answer:
8 diagonals are in regular octagon
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Answer:
an octagon has 8(8−3)/2 = 8×5/2 = 20 diagonals.
Step-by-step explanation:
No. of diagonals in an octogon = ½×8(8−3) = 20
Let's consider a n-sided polygon.
From a vertex the number of possible diagonals are (n-3).
From n-vertices, the number of possible diagonals are n(n-3).
However, length being a scalar quantity, diagonals AD = DA. That reduces the number of diagonals by half.
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