FIND The area of Traingle whose …
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Yogita Ingle 6 years, 10 months ago
A(2,3) B(-1,0) C(2,-4)
X1=2 X2=-1 X3=2
Y1=3 Y2=0 Y3= -4
Area of triangle = 1/2 {x1(y2-y3) + x2(y3-y1) + x3(y1-y2)}
= 1/2 {2(0-(-4)) + (-1) (-4-3) + 2(3-0)}
= 1/2 {8-(-7)+6}
= 1/2 {8+7+6}
= 1/2 × 21
= 21/2
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