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.

center sqaure is 4-1/2" x 4-1/2"

to make the triangles, make squares of 4-7/8" x 4-7/8" and cut them once on the diagonal.

This link could be a handy reference for you.

http://quiltville.com/onpointmath.shtml

Thanks from me too.... this stuff always gives me a headache. That's why I got EQ, so I didn't have to figure it out! lol

Me too. Used to be a wiz at math. Now I need EQ to help me.

if the center square is 4 1/2 x 4 1/2 i cut squares at 5", cut in half diagonally and trim the extra off. it's too bothersome for 1/8's on the outside edges where you have fudge room.

actually, my communication was not clear. My center square is 8 1/2", not 4 1/2".

And, to add to that--THANKYOU for all your help. The response surprises and delights me!