Hi,
you tear them into say 4 inch strips and then cut the squares, and triangles?
It works for square or rectangle shape pieces. Say you need 4 x 4 squares. I tear a strip 4 inches wide. when I have that strip then I tear it into 4 inch pieces. 100% cotton tears both directions. Of course you have to cut triangles or circles etc. the 100% cotton tears in a straight line. Always make a tear on the fabric where the salesperson cut it...it is never straight, and making the tear will give you a straight line. Iron again after tearing, it tends to look wavy but irons out nice and straight.