Question 17

The number of diagonals in a pentadecagon is:

Solution

Share

A pentadecagon has 15 sides.

“For any polygon the number of diagonals is (n)(n-3)/2.

$$=\frac{(15)(15-3)}{2}$$               where n=15

$$=90$$

Was this solution helpful?

Get AI Help

Create a FREE account and get:

  • Download RRB Study Material PDF
  • 45+ RRB previous papers with solutions PDF
  • 300+ Online RRB Tests for Free

Join CAT 2026 course by 5-Time CAT 100%iler

Start your IIM journey with the right preparation and crack CAT 2026.

Enroll Now
Ask AI