Question

How many diagonals can be drawn from each vertex of a 15-gon?

11
18
12
8
None of these answers are correct.

Answer 1

Correct option: third one -> 12

Explanation:

In a polygon with 'n' vertex, we can trace diagonals from one vertex to all vertices, except to the vertex chosen and the two adjacent vertices (because we would have sides and not diagonals), so we would have 'n - 3' diagonals.

If we have a polygon with 15 vertex, the number of diagonals from one vertex is 15 - 3 = 12.

Correct option: third one