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6.    The ar(∆OAB) = ar (∆OPQ).  Find the ordinate of point A.
















               7.    Plot the points A (2, 0), B (2, 2), C (0, 2) and draw the line segments OA, AB, BC
                     and CO. What figure do you obtain? Find its area.

               8.    Plot the points (0,2),(3,0) ,(0 ,-2) and (-3,0) on a graph paper. Join these points in
                     order. Name the figure so formed. Also, find the its area.


               9.    In the given figure, ABCD is a rhombus with diagonals AC = 16 cm and BD = 8
                     cm. Find the coordinates of A, B, C and D.















               10.  In the given figure, PQR is an equilateral triangle with coordinates of Q and R  as
                     (-2, 0) and (2, 0) respectively. Find the coordinates of vertex P  .



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