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153 diagonals.

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Q: How many diagonals can you draw in a polygon with 18 side?
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How many number of side does it have in a closed polygon with 14 diagonals?

A polygon with 14 diagonals will have 7 sides


How many diagonals are in a 35 side polygon?

There are 560 diagonals by using the diagonal formula


How many diagonals can be drawn in a polygon of 68 side?

There are: 0.5*(682-(3*68)) = 2210 diagonals


How many side are there in a convex polygon having 27 diagonals?

9 sides because a nonagon has 27 diagonals


How many side in a 44 diagonal?

An 11 sided polygon has 44 diagonals


Why you need to minus 3 from n in finding the diagonals in the polygons?

You cannot draw a diagonal from a vertex to itself. So that is 1. Also, the diagonals to the adjacent vertices on either side will actually be the sides of the polygon, not diagonals. Those are the other 2.


Is a polygon with 8 sides have 15 diagonals?

A normal convex polygon cannot have 15 diagonals. If it has n sides, it has n*(n-3)/2 diagonals and this is equal to 15 if n = 7.18. However, it is not possible for a polygon to have a fractional side.


What is the formula for the number of diagonals in a hexagon?

n side polygon has n(n-3)/2 diagonals therefore a hexagon has 9 diagonals


How many diagonal can be drawn from a regular hexagon from one vertex?

5 diagonals * * * * * That is not correct since two of these would be lines joining the vertex to adjacent vertices (one on either side). These are sides of the polygon, not diagonals. The number of diagonals from any vertex of a polygon with n sides is n-3.


How many diagonals with a three side figure?

Diagonals connect corners of a figure. If you try to connect two corners of a three sided figure, the lines you draw will exactly mimic the sides of the figure. Because of this, a three sided figure has no diagonals.


How many diagonal lines does an octagon have?

A diagonal line of a polygon is a line that joins any two vertices not already joined by a side. A polygon with n sides has n(n-3)/2 diagonals → an octagon has 8(8-3)/2 = 8 × 5 ÷ 2 = 20 diagonals


How many diagonal lines does a decagon have?

A diagonal line of a polygon is a line that joins any two vertices not already joined by a side. A polygon with n sides has n(n-3)/2 diagonals → a decagon has 10(10-3)/2 = 10 × 7 ÷ 2 = 35 diagonals