Hi Terry,
I'm sorry, I should have explained better. I am working with a block that has four triangles in it, but it only calls for two fabrics. They are placed together finished sides facing, sewn together diagonally, cut down the center and that block needs to be squared up to 8.5", then the two 8.5" blocks are sewn together diagonally, cut in half and that's the block that needs to be 8". When I am done it's as if I've sewn four triangles together to make a square. I think I've kind of figured it out.. what makes things worse is... it's flannel and is stretching a bit so each square is measuring slightly different. Oh well, good practice I guess, LOL!!! Thanks for your help. I wish there was a video somewhere, I learn by seeing vs. reading!