plot the points A(2, 5) B(-2, -2) and c(4, 2) ona graph paper.Join AB, BC and AC Calculate area of triangle ABC
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Step-by-step explanation:
Area of triangle=½(x1(y2-y3)+x2(y3-y1)+x3(y1-y2).
A(2,5)=(x1,y1)
B(-2, -2)=(x2,y2)
c(4, 2)=(x3,y3)
Area=½(2(-2-2)+(-2)(2-5)+4(5-(-2))
=½(2(-4)+(-2)(-3)+4(7)
=½(-8+6+28)
=½(26)
=13sq.units.
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