5. The points A(2,-2), B(8. 4) and C(5, 7) are three vertices of a rectangle ABCD.
Plot these points on a graph paper and hence, find the co-ordinates of its fourth vertex D.
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Answer:
From the graph,
The coordinates of point D are (3,3).
Area of rectangle ABCD=l×b=AB×BC
On further calculation we get
Area of rectangle ABCD=6×2
Area of rectangle ABCD=12 sq. units
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