find the area of triangle (5,-2) (6,4) (7,-2)...
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Answer:
= 6 square unit
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Step-by-step explanation:
A(x1,y1) , B(x2,y2) , C(x3,y3)
A(5,-2) , B(6,4) , C(7,-2)
Area= 1/2[ x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2)]
=1/2[ 5{4 - (-2)} + 6{-2 - (-2)} + 7(-2 - 4)]
=1/2[ 5×6 + 6×0 + 7×(-6)]
=1/2[30 + 0 + -42]
=1/2×(-12)
= -6
= 6 square unit
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