Draw a quadrilateral in the cartesian plane, whose vertices are(-4,5)(0,7)(5,-5) and (-4,-2). Also find its area.
Draw a quadrilateral in the cartesian plane, whose vertices are(-4,5)(0,7)(5,-5) and (-4,-2). Also find its area.
Join AC. Now we have two triangles, Δ ABC and Δ ACD.
Area(Δ ABC) =
=
=
= 29
= Area(Δ ACD)
= ![]()
=
=
= 31.5
Now are of quad, ABDC = 29 + 31.5 = 60.5 sq
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