main conics and projective geometry page

• The classical definition
• Ideal points for the euclidean plane
• Homogeneous coordinates for RP²
• Tangents - a geometrical approach
• A geometric approach to poles, polars and duality
• An algebraic approach to poles, polars and duality
• Conics as sections of a cone.

• the projective group
• perspectivities
• the fundamental theorem
• cross-ratio - a projective invariant
• symmetries of a projective conic

• Cabri conics menu
• Cabri illustrations of classical theorems
• CabriJava illustrations of classical theorems
• Cinderella illustrations of classical theorems
• Pascal's Theorem via Chasles' Theorem