constructor( a = new Vector3(), b = new Vector3(), c = new Vector3() ) {

		/**
		 * The first corner of the triangle.
		 *
		 * @type {Vector3}
		 */
		this.a = a;

		/**
		 * The second corner of the triangle.
		 *
		 * @type {Vector3}
		 */
		this.b = b;

		/**
		 * The third corner of the triangle.
		 *
		 * @type {Vector3}
		 */
		this.c = c;

	}
Constructs a new triangle.

@param {Vector3} [a=(0,0,0)] - The first corner of the triangle.
@param {Vector3} [b=(0,0,0)] - The second corner of the triangle.
@param {Vector3} [c=(0,0,0)] - The third corner of the triangle.