Question

number of triangles formed in a polygon having 15 sides is

Answer 1

Heya


Its a P & C Question
(15C3)−15∗12=455−180=275(153)−15∗12=455−180=275.

275 Triangles will be formed in a polygon having 15 sides✌✌✌✌✌

Answer 2

Answer:

Given,

A polygon of 15 sides.

To Find,

The total number of triangles formed in a polygon having 15 sides.

Solution,

We can simply find the total number of triangles formed in a polygon having 15 sides by using P&C.

By using combination ¹⁵C₃ = 15×14×13/ 3×2×1.

¹⁵C₃ = 5×7×13.

¹⁵C₃ = 455.

Hence, the total number of triangles formed in a polygon having 15 sides is 455 triangles.