如图,象棋盘上“将”位于点(1,﹣2),则“炮”位于点( )
- There're four bedrooms in the house _______ with its own shower.
- That's what I want. I've got a few kids.
作图:(不写作法,但保留作图痕迹).
在平面直角坐标系中有△AOB,运用所学知识,请你设计出一把风扇形状的图案,且是中心对称图形.