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A regular octogon (8 sides) has 20 diagonals. An irregular octogon also has 20 diagonals, but only if all its points point outwards.

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Q: What type of polygon has 20 diagonals?
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Related questions

How many diagonals does a 20 gon has?

A 20 sided polygon has 170 diagonals


How many diagonals are in a 20 sided polygon?

There are 170 diagonals


What polygon has 20 diagonals?

decagon


What polygon has 20 diagonels?

An octagon has 20 diagonals


What is the total number of diagonals in a polygon with eight sides?

It has 20 diagonals


How many diagonals does a 20-sides polygon have?

A polygon with n sides had n*(n-3)/2 diagonals. So a 20 sided polygon would have 20*17/3 = 170


How many diagonals can be drawn from any vertex of a 20-sided polygon?

It is 18 diagonals


How many diagonals does a 20-sided polygon have?

0.5*(202-60) = 170 diagonals


How many diagonals does a 20 sided polygon have?

It has 170 diagonals by using the diagonal formula


How many Diagonals in a 20 sided polygon?

170


How many diagonals does a 12 sided polygon have?

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