GRE Poimts R and S are equidistant from point K,and K is not contained
问题描述：
GRE Poimts R and S are equidistant from point K,and K is not contained
答
points R and S are equidistant from point K,and K is not contained in the line RS.
compare
the measure of angle SRK the measure of angle RKS
线段RS两端点到线外一点K的距离相等,角RKS是顶角,当然不能判断底角和顶角的关系啦!