A.+31.401m,+66.420m B.+31.401m,66.420m C.-31.401m,+66.420m D.-66.420m,+31.401m
A.正比例并同號(hào) B.反比例并反號(hào) C.正比例并反號(hào) D.反比例并同號(hào)
A.定向 B.連接邊和連接角 C.高差 D.定位