an obtuse angle

例句：

1. 1.The car's steering wheel is pointing at an obtuse angle.
   汽车的方向盘指向一个钝角。
2. 2. The architect designed a building with an obtuse angle for optimal energy efficiency.
   建筑师设计了一座建筑，其角度为钝角，以实现最佳的能源效率。
3. 3. The engineer calculated the angle of the roof to ensure it was not an obtuse angle.
   工程师计算了屋顶的角度，以确保它不是钝角。