Question

64. The sum of interior angles of regular polygon is thrice the sum of its exterior angle. The polygon is a. hexagon c. decagon b. octagon d. nonagon​

Answer 1

Answer:

Hexagon

Step-by-step explanation:

Sum of the exterior angle of a polygon = $360^{0}$

Sum of the interior angle of a polygon = $120^{0}$

If in a regular polygon, each interior angle = 120 deg, then each exterior angle = 180–120 = 60 deg. So the polygon has 360 deg/60 deg = 6 sides. The figure is a regular hexagon.