Formalisation en Coq et visualisation d'un cours de géométrie pour le lycée

Teaching high-school mathematics using a general theorem prover becomes a reach- able goal for the near future. In this article, we present a library dealing with geometry in Coq. This library is dedicated to high-school teaching. We stress on using a graphical interface and a drawing tool which ease the accessibility to formal statements. We present some signif- icant examples of statements with figures and proofs developed with Coq. Then we discuss the difficulties encountered in this work.

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