[page:PolyhedronGeometry] →
		[name]
		A class for generating a tetrahedron geometries.
		
		Constructor
		[name]([page:Float radius], [page:Integer detail])
		
		radius — Radius of the tetrahedron. Default is 1.
		detail — Default is 0. Setting this to a value greater than 0 adds vertices making it no longer a tetrahedron.
		
		Properties
		[property:Object parameters]
		
		An object with all of the parameters that were used to generate the geometry.
		
		Source
		[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]