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decagon

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Q: What 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 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


What type of polygon has 20 diagonals?

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


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