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What is the area of this triangle?

What is the area of this triangle?-example-1
User Vince VD
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Typically, you would let the first point be A(x1,y1),

The second be B(x2,y2),

And the third be C(x3,y3).

So the area of triangle formed is equal to-

1/2 |x1(y2–y3) + x2(y3-y1) + x3(y1-y2)|,

User TheThirdMan
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