Left and right leaning diagonal lines run through each square.

A diagonal line between the two is the accepted way.

At the top, a curved diagonal line going from right to left.

The first diagonal line had finished its course, the second beginning on the upper right corner of the picture.

The chair lies further back along the same diagonal line.

All areas north of the diagonal line are restricted as well.

A diagonal line does not go straight up, down, or across.

How he made a 2, starting from the bottom of the diagonal line, I can't imagine.

They had moved in a diagonal line toward the door.

"All right," he said, making a diagonal line for the bank of the river.