containsPoint( point ) {

		return Triangle.containsPoint( point, this.a, this.b, this.c );

	}
Returns `true` if the given point, when projected onto the plane of the
triangle, lies within the triangle.

@param {Vector3} point - The point in 3D space to test.
@return {boolean} Whether the given point, when projected onto the plane of the
triangle, lies within the triangle or not.