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.
Nine Patch Road
Free Quilt Block Pattern
The Nine Patch Road quilt block is a wonderful introduction to the nine patch block, as it contains a nine patch inside another nine patch.
This quilt block is a great beginner block, containing three different units -- the square, half square triangle and the flying geese patches. Playing around with colour can give you a totally different look.
By changing up the background fabrics, you can achieve very different quilts, as illustrated in the sample quilts shown. Sashing between the quilt blocks offers another chance to separate the blocks or add an additional fabric.