Drag B [br]Form a tiling of green triangles. [br]Form a tiling of green triangles and six-pointed stars. Make the angle of the star 60˚. [br]Mentally divide each star into six equilateral triangles and a hexagon in the middle. [br]Form a tiling of triangles and big white hexagons. [br]Form a tiling of triangles and regular dodecagons.