Hexagon partitioned into six equilateral triangles. Like squares and equilateral triangles, regular hexagons fit together without any gaps to "tile the plane" (three hexagons meeting at every vertex), and so are useful for constructing tessellations. The cells of a beehive honeycomb are hexagonal for this reason and because the shape makes efficient use of space and building materials. The Voronoi diagram of a regular triangular lattice is the honeycomb tessellation of hexagons. It is not usually considered a triambus, although it is equilateral. The maximal diameter (which corresponds to the long diagonal of the hexagon), "D", is twice the maximal radius
A Plane Is Born the tail plane. In our regular look at the world of kit aircraft, we meet Steve Pike and Kevin Fagan who have just finished an Australian aircraft - The Jabiru. Back at Staverton Airport, it's a milestone in Mark's Flying progress - with his first solo flight. - Like my Wheels? Mark is back on familiar ground as he fits brakes, wheels and undercarriage to his aeroplane, Martin Dovey introduces us to his vintage Kit-Plane, the Kit Fox, and it is the turn of Navigation to further perplex Mark as he continues his flying lessons. - No Longer Topless A