The half square triangle unit is probably the most commonly used patch in a quilt block -- well it is second only to the square. It is made simply with two triangles, filling up half the square each -- hence the name. Take a quick look through this website, or in any quilting magazine, and you will start to notice that this half square triangle, regardless of its size, is present in more quilts than not.
Free Quilt Block Pattern
The March Basket quilt block makes good use of the half square triangle patches. This 10" quilt block can be used in a variety of ways in your quilt, simply by rotating the blocks in different directions.
The construction of the block is a little different than the "norm" as you create several different rows and then, at times add a single triangle to the grouping. Nothing difficult, just a bit different.
In the sample quilts illustrated, I have chosen four blocks at a time and laid them out in several different variations of 90 degrees. As you can see, secondary patterns emerge as a result of these rotations. The only limiting factor in coming up with your own unique quilt is your imagination.