From 47f9d63a003e6242f1fd3bc324c37617cbc4dbab Mon Sep 17 00:00:00 2001 From: Claude Meny Date: Mon, 24 May 2021 15:43:21 +0200 Subject: [PATCH] Update 12.temporary_ins/06.geometry-coordinates/40.n4/10.main/textbook.fr.md --- .../06.geometry-coordinates/40.n4/10.main/textbook.fr.md | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/12.temporary_ins/06.geometry-coordinates/40.n4/10.main/textbook.fr.md b/12.temporary_ins/06.geometry-coordinates/40.n4/10.main/textbook.fr.md index 24dd2ade0..860f3b4d4 100644 --- a/12.temporary_ins/06.geometry-coordinates/40.n4/10.main/textbook.fr.md +++ b/12.temporary_ins/06.geometry-coordinates/40.n4/10.main/textbook.fr.md @@ -103,8 +103,10 @@ $`(x_M, y_M, z_M)`$ et $`(x_P, y_P, z_P)`$ ! ! qui vérifie trois propriétés : ! Quelques-soient deux éléments $`e_1`$ et $`e_2`$ quelconques de l'ensemble $`E`$, -! * -! +! * $`\forall (e_1,e_2)\in E \times E, d(e_1,e_2)=d(e_2,e_1)`$ +! * $`\forall (e_1,e_2)\in E \times E, d(e_1,e_2)=0\Longleftrightarrow e_1=e_2`$ +! * $`\forall (e_1,e_2)\in E^3, d(e_1,e_3)\le d(e_1,e_2) + d(e_2,e_3)`$ +