第35题: [单项选择]In the coordinate plane,points A and B are endpoints of a diameter of a circle with center(-2,1).If the coordinates of A are(-5,5),what are the coordinates of B A. (0,0) B. (3,-2) C. (3,-1) D. (2,-2) D. (1,-3) 参考答案:E 答案解析:在坐标平面上,A和B两点是以(-2,1)为圆心的直径的端点(endpoint)。若A点坐标为(-5,5),那么B点的坐标是多少 设圆心坐标(x0,y0<