Q.1. P and R are point on side CD of a parallelogram ABCD . Show that (i). ar (triangle PAB) = ar(triangle RAB) (ii). aIf ar (triangle PAB) = 8 cm square, find ar (ABCD) Q.2. Prove that equal chords of two congruent circles subtend equal angles at their centers . Q.3. Construct a square whose each side measure 5 cm . Q.4. ABCD is a parallelogram in which diagonal BD bisects angle B . Show that BD bisects angle D also . Q.5. A 4 cm wooden cube is cut into 1 cm cubes . What is the percentage increase in the surface area after such cutting ?