SOLUTION: how many diagonal can be drawn in 12-gon polygon

Question 243894: how many diagonal can be drawn in 12-gon polygon

Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
the name of the polygon is dodecagon.

click on the following link to see the source of this information.

Naming of Polygons

The formula would be:

d = n*(n-3)/2 where

d = number of diagonals
n = number of sides of the polygon

Example:

number of diagonals in a hexagon would be:

(6 * 3) / 2 = 9

I verified this is correct.

For your 12 sides figure, the number of diagonals would be:

(12 * 9) / 2 = 108/2 = 54

RELATED QUESTIONS
For each polygon, how many diagonals can be drawn from one vertex? How many different... (answered by solver91311)

How many diagonals can be drawn from one vertex of a 12 sided... (answered by glitzgirl_14)

How many diagonals can be drawn from a vertex of an n-gon? (answered by stanbon)

how many diagonals total could be drawn in aregular... (answered by stanbon)

How Many Diagonals Can Be Drawn From One Vertex Of A 12 Sided Polygon? Can you please... (answered by stanbon)

Pleaaaaaaase help me! 5. How many diagonals can be drawn from each vertex of a... (answered by Earlsdon)

How many diagonals and triangles can be drawn far a polygon having 17 congruent... (answered by Edwin McCravy)

How many diagonals could be drawn from one vertex for a... (answered by stanbon,solver91311,lizard)