Lecture
This lecture covers the definitions and properties of the 5 regular polyhedra, also known as the Platonic solids. It explores the spatial construction of these polyhedra, the limitations on the number of faces, and the analysis of their symmetries. The lecture delves into the generation of regular polyhedra and the concept of planar tessellations, highlighting the three types of regular planar tessellations. It also discusses the historical misnomer of associating the regular polyhedra with Plato and the attempts by Kepler to integrate them into astronomy. The lecture concludes with a study of the attempts to justify the number of planets through the regular polyhedra and the subsequent discoveries in astronomy.