Sequence of polygons 
Bisection of the diagonals of an hexagon
Instructions
Click on the vertices of the initial hexagon (blue dots) and drag them, observing the new hexagons obtained by iterated bisection.
Note that, in the last hexagons of the given app, their sides seem to overlap. In fact, the given hexagon succession always tends to straight line segments (eventually degenerated at one point). Why?
