Three right angled triangles are all that is needed to create one of these Flying Geese units (or patches.) The largest triangle piece is considered to be the "geese" piece -- (why it is not called a "goose" piece is beyond me). The other two identical triangles are considered to be the "sky" pieces.
Flying geese units are probably the third most commonly used patches in quiltmaking -- following the square and the half square triangle.
Free Quilt Block Pattern
If I was choosing a name for this four patch quilt block I likely would have used the word Pinwheel in the name. However, this block is called Fan, and I suppose that is correct too, as a pinwheel or a fan would both generate a breeze.
So enough of my musings. This quilt block is a great starter block, for those who are just beginning their quiltmaking journey. The block introduces you to the flying geese unit, a frequent patch in quilt blocks. I have provided instructions for making several different sizes of this quilt block.
The sample quilts illustrated give you some general ideas on laying out the blocks to make your quilt.