counter quadrants

例句：

1. 1. The architect drew a diagonal line across the room to divide it into two halves.
   建筑师在房间里画了一条对角线，将房间分成了两部分。
2. 2. The engineer used diagonal lines to calculate the angle of the roof's slope.
   工程师使用对角线来计算屋顶坡度的角度。
3. 3.The painter used diagonal planes to create a sense of depth and dimension in his painting.
   画家使用对角平面在他的画作中创造出深度和维度的感觉。