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.
Hands of Friendship
Free Quilt Block Pattern
The Hands of Friendship quilt block shown was created using a monochrome colour palette. However, this would be a wonderful selection to use in a scrappy quilt as well. Once again, your imagination is the only limiting factor.
This nine patch quilt block is comprised of only two different patches, in addition to the simple square -- the half square triangle and flying geese units.
Note how varied your quilt can look by the different setting you can choose, as illustrated in the sample quilt layouts shown.
Similar quilt blocks
Cups and Saucers