# How many diagonals does a octagon have?

# How many diagonals does an octagon have?

A polygon with n vertices has n*(n-3)/2 diagonals. .
So an octagon has 8*5/2 = 20 diagonals. Of those 20 diagonals, 8are the principal diagonals, the ones joining a pair of o…ppositevertices

# 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 does a regular octagon have?

It has 20 diagonals and is made up by 6 triangles

# 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.

# How many diagonals are in a octagon?

There are 20 diagonals

# How many diagonals does an regular octagon have?

19 * * * * * The correct answer is 8*(8-3)/2 = 20

# How many diagonals in a regular octagon?

20. And the fact that it is regular is irrelevant. 5 from each vertex. So 8 vertices would (you'd think) give 8*5 = 40. Except that you would then be counting each diagonal… twice - once from each end. So you need to divide by 2. 40/2 = 20.

# How many diagonals in octagon?

20 diagonals in Octagan. For n-sided polygon, no of diagonals = (n choose 2 ) - n = 8C2 - 8 = 28 - 8 = 20

# How many bisecting diagonals does an octagon have?

None, if it is an irregular octagon.

Answered

In Math and Arithmetic

# How many diagonals can be drawn from a octagon?

An octagon has 16 diagonals.

Answered

In Geometry

# How many diagonals that can be drawn in an octagon?

0.5*(8 2 -24) = 20 diagonals

Answered

In Geometry

# How many straight diagonals does an octagon have?

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

Answered

In Math and Arithmetic

# How many diagonals will a regular octagon have?

4 diagonals

Answered

In Math and Arithmetic

# How many diagonals a octagon has?

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