GeoProof: A user interface for formal proofs in geometry

Abstract:

In this paper, we demonstrate using videos the concrete use of the software GeoProof : a user interface for formal proofs in geometry. This paper is a multimedia complement for [20]. GeoProof is dynamic geometry software extended with some proof related features. It can be used to construct, explore, measure and invent conjectures about a geometric configuration. Then, the conjecture can be proved either interactively using the Coq proof assistant, or automatically using an automated theorem prover. Two automated theorem provers are available : the first one is embedded in the software and the second one is formalised in the Coq proof assistant.

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