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How many diagonals does an octagon have?

Updated: 10/18/2022

Wiki User

∙ 9y ago

Best Answer

A polygon with n vertices has n*(n-3)/2 diagonals.

So an octagon has 8*5/2 = 20 diagonals. Of those 20 diagonals, 8 are the principal diagonals, the ones joining a pair of opposite vertices

Wiki User

∙ 9y ago

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Continue Learning about Math & Arithmetic

How many diagonals can be drawn from a octagon?

An octagon has 16 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 straight diagonals does an octagon have?

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

How many diagonals can be drawn in an octagon?

8

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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