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Earn +20 ptsQ: How many diagonals does a octagon have?
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Continue Learning about Geometry
How many diagonals are in a octagon?
There are 20 diagonals
How many diagonals can you draw from vertex of an octagon?
40
Do the diagonals in an octagon have to be congruent?
No, they do not.
Does a regular octagon have perpendicular diagonals?
no
How many diagonals does a octagon has?
20 diagonals For any n-sides polygon, the formula for the number of diagonals is (n/2) x (n-3), so for an octagon it is (8/2) x (8-3) = 4 x 5 = 20.
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