THE SHADOWS OF FLAT GEOMETRIC OBJECTS OF PRIVATE POSITION

When depicting architectural fragments, building structures and structures, it is often necessary to build falling shadows from flat geometric objects that are in a particular position relative to the planes of the projections.

In accordance with the main property of parallel projection, the falling shadow of a flat geometric object parallel to the plane of projections is parallel to the orthogonal projection of the object and congruent to the object itself.

To construct a shadow of a circle, it suffices to find the shadow of its center and draw a circle of radius of the given circle.

To construct a shadow of a polygon, it is enough to find the shadow of one vertex and construct a congruent polygon.