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15. Find the area of the triangle formed by the mid points of the sides of the trianglewhose vertices are A (0, -1), B (2, 1) and C (0, 3).bich are at a distance of 5 unite from |
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Answer» Let mid point of A and B is PP=(0+2)/2,(-1+1)/2=(1,0)Let mid point of B and C is QQ=(0+2)/2,(3+1)/2=(1,2)Let mid point of C and A is RR=(0+0)/2,(-1+3)/2=(0,1)Now area of triangle PQR(1/2)[1(2-1)+1(1-0)+0(0-2)](1/2)[1+1+0]=1sq. unit |
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