Question

using diagonals from a common vertex, how many triangles could be formed from a 22 - gon? a 22 - gon has 22 sides.

Explanation:

Step1: Recall the formula for the number of triangles formed

The number of triangles formed by drawing diagonals from a single vertex of an \(n\) - gon is \(n - 2\).

Step2: Substitute \(n = 22\) into the formula

When \(n=22\), we calculate \(22- 2\).
\(22-2=20\)

Answer:

\(20\)