Cut your strips 2" wide x 5" long. For the center strip in each quarter block--cut them 3" long. Lay the light strip down face up horizontally in front of you. Lay the dark strip face down vertically matching the top edge to the right edge of the light fabric like joining binding strips, sew on the diagonal & snip the corners. I'm attaching a picture that shows the rotary cutting but I would do the "polygon" shapes as 2 x 3" strips.
Buzz Saw
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