A few or months ago someone addressed the issue of how to calculate the size of setting triangles for a square in a square block. I cannot find that particular topic on the board, so I am asking it again. I have an 8 1/2 inch block. Need to know the size square to cut diagonnally to create the setting triangles. Wish I remembered my geometry lessons that, at one time, I was a whiz. Those days are gone. Please help.