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
The Butterfly Star quilt block is made of easy patches, but can be a test of the accuracy of your quarter-inch seam allowance because it contains a small block (comprised of small patches) inside a larger block. However, none of the individual pieces are difficult to construct.
This block is sewn as a four patch to create the centre of the block, and then constructed as a nine patch for the remainder. It contains the commonly used patches flying geese as well as half square triangles.
By using your imagination for the layout, you can create a stunning quilt. Use the sample quilts shown as inspiration or design your own. Enjoy!