A(2,-5,8)点B(10,3,4)点D(3,-5,6)
因为A D相差(1,0,-2)
所以点c((10+1),(3+0),(4+(-2))=(11,3,2)
AC^2=(11-2)^2+[3-(-5)]^2+(2-8)^2=81+64+36=181
AC=根号181
A(2,-5,8)点B(10,3,4)点D(3,-5,6)
因为A D相差(1,0,-2)
所以点c((10+1),(3+0),(4+(-2))=(11,3,2)
AC^2=(11-2)^2+[3-(-5)]^2+(2-8)^2=81+64+36=181
AC=根号181