Peaky and Spike

The next pair of rulers, Tri-Recs, are used to make the shapes the late Doreen Speckman would call Peaky (the mountain shaped triangle) and Spike (the sharp pointy triangle) and which appear in many blocks, 54-40, as in the quilt on my bed, or fight for instance. When cutting the Spike units for a star unit you need to reverse the shape to get both halves. If you fold strips or place them same sides together this will happen automatically.