Isosceles triangles are three-sided shapes with two sides the same length. Eight isosceles triangles sewn together form an octagon. Sew Half SquareTriangle - 3" Finished Squares (Die #55009) to the corners of this octagon and it becomes a Kaleidoscope block. Sew several blocks together and play with the colors and you can create a stunning quilt with optical illusions of circles!
Finished Size: 4 1/4"W x 5 1/8"H (10.8 cm x 13.0 cm)