英语翻译
问题描述：
英语翻译
prove that (1,3),(4,2)and (-2,-6) are vertices of a right triangle and specify the vertex at which the right angle occurs.
find the equation for the line that is perpendicular bisector of the line segment joining (2,8) and (-4,6)
答
1.证明(1,3), (4,2)and (-2,-6) 这三个点是直角三角形的三个顶点,并指出哪一个是直角所关联的顶点.
2.指出垂直于(2,8) and (-4,6)这两点连线的中点的方程.（连接2,8 and -4,6 , 求出中点,之后求出垂直于这条线并且过中点的equation）