Find the area of the triangle whose vertices are (-5,-4), (1,6), (7,-4)
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that's answer area of triangle 60
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Answer:
-60
Step-by-step explanation:
X1=-5. Y1=-4
X2=1. Y2=6
X3=7. Y3=-4
Area of triangle = 1/2 [X1 (y2-y3) + X2 (y3-y1)+X3 (y1-y2)
= 1/2[-5(6+4)+1(-4+4)+7(-4-6)]
=1/2[-5(10)+1(0)+7(-10)]
=1/2[-50+0-70]
=1/2[-120]
=-60
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