对于边长为2的正△ABC,建立适当的直角坐标系,写出各个顶点的坐标.
1-(-1)×(-1)-(-1)×0×(-1)
(-10)××0.1×6
│-2│-(-)+1-│1-│
0-21+(+3)-(-)-(+)
(3-5)-(6-10)