__Introduction to
Advanced Plane Geometry__

Shown below is an interactive example of two "Intersecting Planes/
Laminas" in space. The Line of intersection and the Dihedral angle can be
visually obtained from the 3d model below. The Dihedral Angle can be obtained
visually by looking in perpendicular to the Auxiliary Plane 2 (Aux. Plane2).
Likewise the line of intersection can be seen in "True Length" by
looking Perpendicular to the First Auxiliary Plane (Aux. Plane 1).