Fill in the blanks. (i) Sum of interior angles of a polygon of n sides is P right angles. (ii) The measure of at least one Q angle of a concave quadrilateral is more than\[180{}^\circ \]. (iii) A quadrilateral which has only one pair of equal opposite angles is R . (iv) Sum of all exterior angles of a polygon of n sides is S .

• A. P Q R S 4 Exterior Kite \[n\times 360{}^\circ \]
• B. P Q R S \[n-2\] Exterior Trapezium \[n\times 180{}^\circ \]
• C. P Q R S \[2n-4\] Interior Trapezium \[360{}^\circ \]
• D. P Q R S 2 Interior Trapezium \[180{}^\circ \]