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It is an octagon
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Earn +20 ptsQ: What is a polygon with 20 diagnols?
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How many diagnols does a octagon have?
A polygon with n sides has n*(n-3)/2 diagonals (not diagnols!).So, an octagon has 8*5/2 = 20 of them.
How many diagnols can a polygon with three sides have?
None
How many diagnols does a 11 sided polygon have?
44
What polygon has two diagnols that are perpendicular angles?
A square, a rhombus and a kite
How many diagnols does a 100 sided polygon have?
It has: 0.5*(100^2-(3*100)) = 4850 diagonals
What is a rule for finding the number of diagnols for a polygon with N sides?
The rule is: 0.5*(N2-3N) = number of diagonals
How many diagnols does a triangle have?
a triangle has 0 diagnols
What is a polygon with 20 faces?
A polygon with 20 sides is an icosagon.
What is the name of 20 polygon?
A 20 sided polygon is an 'icosagon'
How many diagnols does a hectagon have?
There is no such shape. And unfortunately the word is too much like two terms to determine which of them you mean.If the polygon has n sides (n>3), then it has n*(n-3)/2 diagonals.
What is the name for a 20 sided polygon?
A 20-sided polygon is an icosagon.(see related link)
What is a 20 sided polygon?
Duodecagon <--wrong... a duodecagon is a 12-sided polygon. icosagon is a 20 sided polygon.
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