4. In Fig. 9.16, P is a point in the interior of aparallelogram ABCD. Show that(i) ar (APB) + ar (PCD)=-ar (ABCD)(ii) ar(APD) +ar (PBC)-ar (APB) +ar (PCD)[Hint: Through P, draw a line parallel to AB.]Fig. 9.165. In Fig. 9.17, PQRS and ABRS are parallelograms P Aand X is any point on side BR. Show that(i) ar (PQRS) = ar (ABRS)(i) ar (AXS)ar (PQRSFig. 9.17

4. In Fig. 9.16, P is a point in the interior of aparallelogram ABCD.

1.	4. In Fig. 9.16, P is a point in the interior of aparallelogram ABCD. Show that(i) ar (APB) + ar (PCD)=-ar (ABCD)(ii) ar(APD) +ar (PBC)-ar (APB) +ar (PCD)[Hint: Through P, draw a line parallel to AB.]Fig. 9.165. In Fig. 9.17, PQRS and ABRS are parallelograms P Aand X is any point on side BR. Show that(i) ar (PQRS) = ar (ABRS)(i) ar (AXS)ar (PQRSFig. 9.17
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