The pages below explore different ways of constructing, visualising, and manipulating geometric forms: from plane geometry and 3D modelling to enclosing, expanding, chamfering, tessellating, and interlocking polyhedra. Many of the models are built with Rhinoceros, Grasshopper, and GeoGebra and are accompanied by interactive resources and examples of exploration in the classroom or seminars.
- studying | notes, seminars, and worked examples on solid geometry.
- modelling | step‑by‑step construction of convex regular, quasiregular, and semiregular polyhedra.
- 3D models | digital models of concave and dual polyhedra for visualisation and printing.
- enclosing | exploring figures and spaces inside the Platonic solids.
- expanding | systematic edge and face expansions of polyhedra.
- chamfering | chamfer operations on regular polyhedra and their effects.
- tessellating |tessellations in the plane and in space, including structural examples.
- interlocking | topological interlocking of convex polyhedra and related experiments.
- plane geometry – theorems, polygons, and curves in the plane.
- printer’s log | notes and documentation from 3D printing experiments.
- my sketchfab | selected interactive 3D models hosted on Sketchfab.
moving geometry 