斜角规

例句：

1. 1. The engineer used a square to measure the angle accurately.
   工程师用一个正方形来准确测量角度。
2. 2. The carpenter used a square to make sure the joint was square.
   木匠用一个正方形来确保接合处是方形的。
3. 3. The architect measured the room dimensions with a square before drawing up plans.
   建筑师在绘制平面图前用一个正方形测量房间尺寸。