Hello friends! I have tested three different methods for making half rectangle triangles for quilt patterns and I am sharing them all with you. I have one pattern in my shop, The Origami Quilt Pattern, that practices using these shapes. I believe this was only the second or third pattern I had ever made and when I jumped into the HRT world I found it very confusing. If you ask me - the secret is in the trimming. Let's jump in! Let's start with the math! If you aren't following a quilt pattern you'll want to calculate the finished size of your blocks first. I want my blocks to be 3