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Contre.fort.XVe.siecle. Les contreforts du XVee se composent gnralement d'un corps dont les faces se coupent et se pntrent suivant des angles degrs Ainsi la base est carre prsentant une face parallle au mur et deux faces perpendiculaires ce mur Drawings by Eugne ViolletleDuc ViolletleDuc Drawings of buttresses