点(2,-3)关于原点对称的坐标为( )
A: (2 ,-3)
B: (2 ,3)
C: (-2 ,3)
D: (-2 ,-3)
A: (2 ,-3)
B: (2 ,3)
C: (-2 ,3)
D: (-2 ,-3)
举一反三
- 点(1, 2, 3)关于坐标原点O对称的点的坐标为( ) A: (-1, -2, -3) B: (-1, -2, 3) C: (1, 2, -3) D: (1, 2, 3)
- 点(2,-3)关于原点对称的坐标为( ) A: (2 B: (2 C: (-2 D: (-2
- 在平面直角坐标系中,点(2,3)关于原点对称的点的坐标是( )() A: (-2,<br/>3) B: (-2,-3) C: (-3,-2) D: (2,-3)
- 点M(2, 1, 3)关于坐标原点的对称点坐标是() A: (-2, -1, -3) B: (-2, 1, -3) C: (2, -1, -3) D: (-2, 1, 3)
- 点(2,3)关于坐标原点对称的点的坐标是 A: (-2,3) B: (-2,-3) C: (2,-3) D: (3,2)