Explore 3D and 4D geometry. Print unfolded nets for paper construction. All Platonic, Archimedean, uniform polyhedra. Compounds, Stewart toroids, near misses, noble polyhedra. All 2191 known uniform 4D polytopes. Morph between duals. Use stellation to create trillions of new polyhedra. 3D projections, 3D cross-sections, and 3D nets of 4D polytopes. Interactive animating of cross-section depth. Put images/videos on faces. Export video. 3D export.
An electronic ready reckoner for decoding and coding resistor color bands.
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