Fits Danze shower and tub & shower trims with the diverter on the tub spout. Fits all Danze shower and tub & shower trims with the diverter on the valve trim / handle trim. This item Danze D112000BT Shower Single Control Pressure Balance Mixing Valve with Screwdriver Stops.
This theorem involves Euler's polyhedral formula (sometimes called Euler's formula). Today we would state this result as: The number of vertices V, faces F, and edges E in a convex 3-dimensional polyhedron, satisfy V + F - E = 2.
Descartes' Theorem is a very lovely result in its own right, and in 3 dimensions it is equivalent to Euler's polyhedral formula. It is tempting to speculate about why all the able mathematicians, artists, and scholars who investigated polyhedra in the years before Euler did not notice the polyhedral formula.