it has 19 sides (:
1/2*(n2-3n) = 665 diagonals where n means number of sides
340
It must have 19 sides to comply with the formula:- 0.5*(192-(3*19)) = 152 diagonals
No matter how many sides a convex polygon has, the sum of its exterior angles is 360°.
9 sides because a nonagon has 27 diagonals
It depends if the polygon is convex or concave but if it is a regular polygon it would have 560
120*(120-3)/2 = 7020
how many diagonals are there iin a polygon of 11 sides
In a polygon with n sides, we have n(n-3)/2 diagonals. In a convex polygon with n sides, you can draw n-3 diagonals from each vertex, but you are counting each one twice you so you need to divide by do. That is why we have n(n-3) divided by 2
That polygon is called a "triangle". It has no diagonals.
It is: 8-2 = 6 triangles
A 7 sided polygon has 14 diagonals
There are 77 diagonals
38 diagonals
An heptagon has 7 sides and 14 diagonals
it has four sides