“The slashes are oval or oblong, sometimes deeper at one side or one end, and usually set at a diagonal with the upper end to the right.”

“Bias binding is a strip of fabric cut on the diagonal, at a 45-degree angle.”

“It may take him many weeks to realize that bishops move only along diagonals and rooks move only along orthorgonals.”

“How many diagonals are needed to divide a heptagon, a nonagon, and an undecagon into triangles?”

“The composition is effective through the use of converging diagonals and the play of light on the transparent materials.”