Figure 7 Hinged triangles
Drag B to form a tiling of triangles.
Open the empty spaces to form a tiling of green triangles and three-pointed stars.
For what range of angles will you get three-pointed stars?
Form a tiling of green triangles and big white triangles.
What angle will give you white equilateral triangles?
Form a tiling of green triangles and white hexagons.
What angle will give you regular hexagons?