Sum of interior angles of a polygon of n sides = _____.
(2n - 1) × 90°
(2n - 4) × 90°
(2n - 2) × 90°
(4n - 2) × 90°
Question 90: If 2n+2−2n+1+2n=C×2n, then find C.
In the following diagram, the bisectors of interior angles of the parallelogram PQRS en-close a quadrilateral ABCD.
Show that: (i) ∠PSB+∠SPB=90∘(ii) ∠PBS=90∘ (iii) ∠ABC=90∘(iv) ∠ADC=90∘ (v) ∠A=90∘(vi) ABCD is a rectangleThus, the bisectors of the angles of a parallelogram enclose a rectangle.
Sum of interior angles of a polygon of (n+1) sides =