What is it? Triangles and quilts. What do they have to do with each other. Plenty. Using half-square and quarter square triangle blocks in various arrangements of color and size have produced literally thousands of quilt patterns. Solid colors, prints, batiks, fabric styles and block orientations all contribute to an unending array of designs. And triangles seem to be an easy thing to create. Right? But how do I know what size to cut my fabric blocks to begin with? There is a formula for the half-square block. You can either…