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Subjects>Math>Geometry

How many diagonals does a octagon have?

Updated: 4/27/2022

Wiki User

∙ 9y ago

Best Answer

20 diagonals For any n-sided 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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∙ 9y ago

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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.

Related questions

How many diagonals can be drawn from a octagon?

An octagon has 16 diagonals.

How many diagonals are in a octagon?

There are 20 diagonals

How many diagonals does a regular octagon?

8 diagonals

How many diagonals will a regular octagon have?

4 diagonals

How many bisecting diagonals does an octagon have?

None, if it is an irregular octagon.

How many diagonals in a octagon?

20

How many diagonals can an octagon have?

20

How many straight diagonals does an octagon have?

An octagon has four (4) diagonals, each connecting two opposite vertices.

How many diagonals in an octagon?

there are 5, 6, or 7 diagonals in a pentagon

How many sides and diagonals are there in an octagon?

Sides: 8 Diagonals : 20

How many diagonals can be drawn in an octagon?

8

How many diagonals that can be drawn in an octagon?

0.5*(82-24) = 20 diagonals

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