| Ancient Greek geometers knew that the number of solids that can be constructed from regular geometric figures is limited to five. |
| Halley suggested to him that he might devote his considerable talents to the restoration of the work of the early Greek geometers, such as Euclid and Apollonius of Perga. |
| Ever since Plato, philosophers have envied geometers their certitudes. |
| However, Tangencies was lost, and a simple and an elegant solution has escaped the grasp of some of the greatest geometers since. |
| Pappus of Alexandria is the last of the great Greek geometers and one of his theorems is cited as the basis of modern projective geometry. |
| However, Schein believes that Goldberg's shapes or cages, as geometers call them are not polyhedra. |
