One portal for every figure in this collection.
This collection covers 24 named figures: 15 plane figures and 9 solid figures. It is a defined collection, not a claim to include every possible geometric figure. General polygons, irregular solids, curves and higher-dimensional figures can form future additions.
- Circle
- Triangle
- Right triangle
- Equilateral triangle
- Isosceles triangle
- Square
- Rectangle
- Rhombus
- Parallelogram
- Trapezoid
- Kite
- Ellipse
- Regular pentagon
- Regular hexagon
- Regular octagon
- Cube
- Cuboid
- Sphere
- Right circular cylinder
- Right circular cone
- Right square pyramid
- Regular tetrahedron
- Right triangular prism
- Ring torus
Each portal has four calculators selected for its own figure. Similar relationships are explained in the context of that figure; no account or subscription is required.