Classification of conic sections: cirle, ellipse, hyperbola, parabola. Definition of conic sections as a set of points of given metric properties (two ways) or as a set of points of given affine properties (two ways).
Mutual position of a conic section and a line, mutual position of conic sections.
Definition and classification of conic sections as a set of points of given properties. Mutual position of a conic section and a line, mutual position of conic sections.