MATERIALS FOR EXERCISES
Projection of a straight line and a line segment
Orthogonal projection of a solid with a base in the plane of projection
Point of intersection of a line and a plane and orthogonality
Orthogonal projection of plane figures and a revolution
Orthogonal projection of solids in arbitrary position
Vlasta Szirovicza, Helena Halas i Sonja Gorjanc - 3DGeomTeh - Developing project of the University of Zagreb