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 Midnight Pinwheel quilt block is a five patch block (so named because it is designed on a 5 x 5 grid) containing, squares, half square triangles and flying geese patches.
Rather than construct the block as five rows of five patches, I prefer to sew it as an uneven nine patch for the simple reason that I like to work with "chunks" rather than in rows. However, do not let my method sway you. Choose your favourite sewing method.
The sample quilts illustrated are both designed on point but look very different. I also chose to use mitred borders on one quilt just to keep the colour blocking going. I would be very interested in seeing your finished design one day!