Problem Solving
试题详情
题目：
In the xy-plane, the points (c, d ) , (c, -d ), and (-c, -d ) are three vertices of a certain square. If 
and 
, which of the following points is in the same quadrant as the fourth vertex of the square?
and , which of the following points is in the same quadrant as the fourth vertex of the square?选项:
A、(-5, -3)
B、(-5, 3)
C、(5, -3)
D、(3, -5)
E、(3, 5)
答案:
E
