Great Software for Plane Geometry

By Xah Lee. Date: . Last updated: .


Spirograph By Nathan Friend e6a8e
[Spirograph By Nathan Friend. At [2016-12-29 best spirograph emulation in JavaScript. source code at ]]


GeoGebra screenshot

GeoGebra is a interactive geometry software. Written by Markus Hohenwarter, started in 2001.

For some sample files of GeoGebra, see deltoid curve, cross curve, nephroid curve .

See also: Visual Dictionary of Special Plane Curves

Geometry Expressions

Geometry Expressions 26072
Geometry Expressions

Cabri II Plus

Cabri II Plus, developed in France. Cabri is one of the early interactive geometry software in the mid 1990s. Cabri has a hardware TI calculator version. A particular feature that is first done by Cabri is that it has conics sections as a primitive. That is, you can have 5 points that defines a conic section, that is any of parabola, ellipse, hyperbola. Dragging any of the points will change the conics section. Any other figures build on the conic section will of course change accordingly. This makes Cabri a excellent choice for doing projective geometry.

Books and Reference

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Math Software

Curves and Surfaces
curved space mac-s245x256
3D Geometry
GeoGebra screenshot-s274x228
Plane Geometry
NonEuclid by Joel Castellanos 2018 33578-s274x228
girih tiling app 6792f-s316x198
Tilings, Patterns
Polyhedrons and Polytopes
xaos screen-s271x231
Dynamical Systems
Hexagonal Generative Art by Charlotte Dann 52463-s344x181
Cellular Automata
chinese checkers 7889e-s315x198
Math Board Game
peg solitaire puzzle 42044-s296x211
Kawai MP9000 piano dodecahedron-s289x217
Magic Polyhedrons
Math Software for Programers Old Math Software