GIF Animated Geometry
A torus is like a tube which meets at both ends. A torus looks like a donut with circular inner and outer radii.
The diameters of two circles can define a torus.
Define a torus with the width of the
and outer perimeter of the
The tube width defines the tube's diameter.
The outer perimeter becomes the outer diameter of the torus.
The outer diameter and tube diameter define the torus' inner diameter.
This particular torus displays shiny highlights. WebGL shaders render highlights with the interactive 3D torus.