Question

The interior angle of a regular polygon is 20 more than thrice of its exterior angle

i) If the exterior angle is x, what will be the interior angle?

ii) What is the sum of interior and exterior angles of a vertex?

iii) Form an equation with this idea

iv) Find the exterior angle​

Answer 1

Answer:

Answer: Let the number of sides of a regular polygon are n, its each exterior angle = 360°/n. 360°/n = 20°. ... Sum of all the interior angles and all exterior angles= 2880°+360°= 3240°

Step-by-step explanation:

It is clear from the figure that y is an interior angle and x is an exterior angle. By Triangle exterior angle theorem. subtract 140° from both sides