half, quarter and split half square triangles

I spent a lovely Friday sewing triangles. I've decided that many of my quilting samples should be a consistent size. So I'm going to spend some time working on samples for classes that are 2 by 3 feet... 24 inches wide and 36 inches long. This is a challenge. I usually just wing it, see whatever size the quilt ends up.

This is a sample for my half square triangle quarter square triangle and split half triangle squares. I just learned the term split-half triangle while doing some Pinterest searching the other day. I never knew what to call those squares made of two quarter triangles and one half triangle. Now I know. Split half triangle square perfect name.