How to Make Half Rectangle Triangles: Recently I have really enjoyed making and incorporating half rectangle triangles into my projects. They are easy to make and are a fun twist on traditional half square triangles. Here's how to make them: #1. Cut out two rectangles that are the exact same size from coordinating fabric. #2. Cut each rectangle in half diagonally. #3. Switch and pair up the coordinating halves...lining them up the way you want them to look in ... View the Post