Investigating Solids with Face-transitivity
Age 14 to 18
Article by Edward Cree
Here are the vertices of the $V_{3,6,6}$ solid labelled to show the
types of vertex on each face.
Notice how every triangular face has one $V_3$ vertex and two $V_6$
vertices.
Below are the other images from the article with their
vertices labelled to show how many faces are meeting at each
vertex.