Basic geometric concepts to understand Affine Euclidean geometries (inhomogeneous coordinates) projective geometry(homogeneous coordinates) plane at infinity: attine geometry absolute conic: Euclidean geometry7 Basic geometric concepts to understand • Affine, Euclidean geometries (inhomogeneous coordinates) • projective geometry (homogeneous coordinates) • plane at infinity: affine geometry • absolute conic: Euclidean geometry