The goal of the assignment is to apply methods of transforming orthogonal projections to solving metric problems. The coordinates of four points ABCD are given (see next table). Determine the following values by transforming projection planes: • 1. The size of the dihedral angle at the edge AB. • 2. The shortest distance between ribs DA and BC. • 3. Distance from vertex D to plane ABC. • 4. Natural size of triangle ABC.