Duality (projective geometry)

In projective geometry, duality is a fundamental principle that establishes a correspondence between geometric objects in such a way that points and lines (or planes in higher dimensions) can be interchanged. This concept reveals the symmetric nature of geometric relationships and highlights the dual nature of the structures within projective space. ### Key Concepts of Duality: 1. **Basic Definitions**: - In projective geometry, points and lines are considered fundamental objects.