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What is a rule for finding the number of diagnols for a polygon with N sides?

Updated: 8/20/2019

Wiki User

∙ 12y ago

Best Answer

The rule is: 0.5*(N2-3N) = number of diagonals

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∙ 12y ago

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Q: What is a rule for finding the number of diagnols for a polygon with N sides?

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Related questions

How many diagnols can a polygon with three sides have?

None

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.

What is the formula finding no of diagonal for any polygon?

1/2*(n2-3n) where n is the number of sides of the polygon

What is the formula for finding the sum of the interior angles of a polygon?

(number of sides-2)*180 = sum of interior angles of a polygon

Formula for finding no of sides of a convex polygon whose no of sides is 44?

The number of diagnol formed by a convex polygon having N sides is {N*(N-1)/2} - N .

What are the two ways of finding the number of sides of a polygon which has 189 diagonals?

By using the polygon diagonal formula or the quadratic equation formula in which in both formulae they work out that the polygon in question has 21 sides.

How many sides are in a regular polygon with an interior angle of 172.5?

48 sides A formula for finding the number of sides of a regular polygon given an interior angle: 360/(180-angle)=sides

Give the formulas for finding the number of sides of a regular polygon when given the measure of an exterior angle?

360/exterior angle = number of sides

What are the steps of finding the diagonal of a polygon?

Using the formula: 1/2*(n2-3n) whereas 'n' is the number of sides of the polygon

The formula for finding the sum of the angles of a polygon?

The formula for finding the sum of all angles of a polygon is: N = number of sides (N-2)180 = The sum of all angles

What is the formula for finding the sum of angles?

Subtract the number of sides of the polygon by two then multiply it by 180Formula:Interior angle sum = (s-2) x 180 (With s being the number of sides the polygon has.

How do you find the number of sides of an equiangular polygon by measuring one of its interior angles?

The correct equation for finding the number of sides for an equiangular polygon is: 180=(n-2) Shall demonstrate a sample problem if needed.

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What is a rule for finding the number of diagnols for a polygon with N sides?

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