The sum of the interior angles of a polygon of n-sides is given by:

• (n + 2) x 180°

• (n - 2) x 90°

• (n - 2) x 180°

The measure of the exterior angle of a regular polygon is 144°. The measure of its interior angle is:

• 144°

• 36°

• 216°

The sum of the exterior angles of a quadrilateral is always equal to:

• 90°

• 360°

• 180°

• No

What do we call a quadrilateral having only one pair of opposite sides as parallel?

• square

• rectangle

• trapezium

The measure of each interior angle of a regular polygon of ‘n’ sides is given by: