Asked by faizel
Mid-points of the sides AB and AC of a triangle ABC are ( 3 , 5 ) and ( -3 , -3 ) respectively,then the length of the side BC is
Answers
Answered by
Steve
let A = (h,k). Then
B=(h+2(3-h),k+2(5-k))=(6-h,10-k)
C=(h+2(-3-h),k+2(-3,k))=(-6-h,-6-k)
BC^2 = 12^2+16^2 = 340
BC=√340
B=(h+2(3-h),k+2(5-k))=(6-h,10-k)
C=(h+2(-3-h),k+2(-3,k))=(-6-h,-6-k)
BC^2 = 12^2+16^2 = 340
BC=√340
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