Which of the following is not true for an exterior angle of a regular polygon with sides?
Each exterior angle
Explanation for correct option:
Option(D):
Polygon: A closed plane figure bounded by straight lines.
Interior angle: An angle formed inside the two adjacent sides of a polygon as shown in the figure.
Exterior angle: When a side of a polygon is extended, then the angle formed outside the polygon is an exterior angle as shown in the figure.
The formula to find each interior angle of a regular polygon with sides
Explanation for incorrect options
Options (A) and (C):
For a regular polygon with sides
Exterior angle
Option(B):
If interior and exterior angle are forming linear pair, then
Interior angle Exterior angle
Exterior angle Interior angle.
Hence, the correct option is option(D)