Question

Find the sum of exterior angle obtained on producing, in order, the side of a polygon with : 7 sides

Answer 1

No. of sides n = 7

Sum of interior & exterior angles at one vertex = 180°

Sum of all interior & exterior angles = 7 × 180° = 1260°

Sum of interior angles = (n - 2) × 180°

= (7 - 2) × 180°

= 900°

∴ Sum of exterior angles = 1260° - 900° = 360°