Triangle Bag Tutorial

I bought a pack of canvas bags a while ago when I made my dot bag and I finally figured out what to do with the extra ones.  I added some triangle embellishments for a pop of color.  I really like the way they turned out!
Materials:
-canvas bag
-scraps of 4 coordinating fabrics
-sewing machine
-paper
-fabric pencil
-scissors (for paper and for fabric)

This makes you end up with a triangle that is about 3.5 inches on all sides. (The diagonal lines I cut are just shy of 3.5 inches).  It's probably not the easiest way to make an equilateral triangle, but it's the best I could think of without a compass.