answersLogoWhite
Math and Arithmetic
Algebra
Geometry

How many diagonals does a octagon have?


Top Answer
User Avatar
Wiki User
Answered 2015-06-15 09:29:58

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.

212223
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
๐Ÿ˜‚
0
User Avatar

Your Answer

Loading...

Still Have Questions?

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 does a undecagon have?

A undecagon has 44 diagonals. A dodecagon has 54 diagonals. An octagon has 20 diagonals. A heptagon has 14 diagonals.


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


How many side does a octagon with 35 diagonals have?

An octagon has 8 sides and 20 diagonals so the question doesn't make sense


How many diagonals are in an octagon 20 or 40 Please explain I've heard they had 40 but when I follow the expression I get 20.?

There are 20 diagonals in an octagon.


How many diagonal lines can you make in a octagon?

There are 20 diagonals in an 8 sided octagon


How many diagonals does a regular octagon have?

It has 20 diagonals and is made up by 6 triangles


How many diagonals can you draw from vertex of an octagon?

40


How many diagonals a octagon has?

0 thick head


How many diagonals does each vertex have in an octagon?

5


Total diagonals in an octagon?

20 diagonals


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, 8 are the principal diagonals, the ones joining a pair of opposite vertices


Do the diagonals in an octagon have to be congruent?

No, they do not.


What shape has 35 diagonals?

octagon


Are there diagonals in an octagon?

Yes, four of them.