Find area of triangle passing through the points (1,2) (3,5) and (0,0)
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A(1,2) B(3,5) and C(0,0)
area of triangle =1/2(1(5-0)+3(8-2)+0(2-5)
=1/2(1(5)+3(6)+0(-3)
=1/2(5+18+0)
=1/2(23)=23/2
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