Question:
Fill in the blanks.
For a convex polygon of n sides, we have:
(i) Sum of all exterior angles = .........
(ii) Sum of all interior angles = .........
(iii) Number of diagonals = .........
Solution:
(i) Sum of all exterior angles $=360^{\circ}$
(ii) Sum of all interior angles $=(n-2) \times 180^{\circ}$
(iii) Number of diagonals $=\frac{n(n-3)}{2}$