We have met projective conics from an algebraic point of view and also as sections of a cone. Here, we shall use the additional ideas of projective transformations to investigate them further. This will lead to more results about plane conics, and some interesting proofs of known ones. Although it is possible to follow various paths through these pages, we suggest one logical route below, with digressions. projective transforms and conics betweenness and related concepts the interior of a projective conic the three point theorem the five point theorem the projective symmetry group of a conic an explicit example the two point theorem affine and projective symmetry groups cross-ratio - a projective invariant embeddings on extended planes pencils and harmonic pencils some examples of harmonic pencils central conics revisited conjugate diameters

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