点(1,-2)关于原点的对称点的坐标是()
A: (1,2)
B: (-1,2)
C: (-1,-2)
D: (1,-2)
A: (1,2)
B: (-1,2)
C: (-1,-2)
D: (1,-2)
举一反三
- 点(1,-2)关于原点的对称点的坐标是() A: (1,2) B: (-1,2) C: (-1,-2) D: (1,-2)
- 如图,点A的坐标为(-1,2),点A关于y轴的对称点的坐标为() A: (1,2) B: (-1,-2) C: (1,-2) D: (2,-1)
- 点(1,-1,2)关于y轴的对称点的坐标是( ). A: (1,1,-2) B: (-1,-1,2) C: (1,1,2) D: (-1,-1,-2)
- 点(1,2,3)关于原点的对称点坐标为( ). A: (1,-2,-3) B: (-1,-2,-3) C: (-1,2,-3) D: (1,2,3)
- 已知点(2,1),则它关于原点的对称点坐标为() A: (1,2) B: (2,-1) C: (-2,1) D: (-2,-1)