BC所在直线方程是:7x+2y-39=0
设:C(m,n),则:
点C在BC上,得:
7m+2n-39=0 -------------(1)
BC的中点是P((m+5)/2,(n+2)/2)在直线y=x上,得:
(m+5)/2=(n+2)/2 ---------(2)
解之
BC所在直线方程是:7x+2y-39=0
设:C(m,n),则:
点C在BC上,得:
7m+2n-39=0 -------------(1)
BC的中点是P((m+5)/2,(n+2)/2)在直线y=x上,得:
(m+5)/2=(n+2)/2 ---------(2)
解之