Looks like a Stack and Whack. Use squares stacked up and cut at an angle. If you want them all the same angle, measure in the same on two opposite sides--i.e. 4" from right on the top and 3" from right on bottom. Use 1" black for separation and sew 1/4" to connect two different colors--no loss in size for block. Donna Jordon explains this much better in her Ribbons quilt tutorial on YouTube.