Question

U JE
Number of diagonal having
5 side Polygon
in 12 Side Polygin​

Answer 1

Step-by-step explanation:

closed polygon with 12 sides will have 12 vertices.

A diagonal requires two vertices.

=> C(12,2) = 12!/2! 10! = 66 lines can be drawn using any 2 points.

But 12 lines form the sides of the polygon.

=> 66 - 12 = 54 Diagonals can be drawn.