Multiple-Choice:Given that a triangle with vertices A(2,1),B(4,5),and C(6,1) is reflected across
问题描述：
Multiple-Choice:Given that a triangle with vertices A(2,1),B(4,5),and C(6,1) is reflected across
答
多重选择：给定一个顶点分别为 A(2,1),B(4,5),and C(6,1)的三角形,它反映在.