Seize and control open files and diagonals with pieces .
用棋力夺取和控制开放线和开放斜线。
Look at the white diagonals andyou will see why .
看着白色的对角线你就知道为什么了。
If I scissor the rectangle or parallelogram along their diagonals . What will be then ?
如果剪开的是一个长方形或者平行四边形，又会怎么样？请告诉你的同桌。
This is very similar to the effect that diagonals can have on the viewer ; the instability and chaos makes our eyes move around , and this naturally imparts energy into an image .
