Find the area of the triangle whose vertex are (2 3), (- 34) and (7,5)
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The given vertices of the triangle are A(−3,−1),B(5,3) and C(2,−8)
Area of the triangle=
2
∣Ax(By−Cy)+Bx(Cy−Ay)+Cx(Ay−By)∣
=
2
∣−3(3−(−8))+5(−8−(−1))+2(−1−3)∣
=
2
∣−33−35−8∣
=
2
∣−76∣
=
2
76
=38
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