From aaf739cbd9ebe15a614100978d50ff82578595e0 Mon Sep 17 00:00:00 2001
From: Claude Meny <claude.meny@irap.omp.eu>
Date: Tue, 15 Oct 2019 15:20:34 +0200
Subject: [PATCH] Update cheatsheet.en.md

---
 .../02.mirror/02.new-course-overview/cheatsheet.en.md     | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md
index 3c7e10099..ebee7f781 100644
--- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md
@@ -101,16 +101,16 @@ $`\overline{M_T}=-\dfrac{\overline{SA_{ima}}}{\overline{SA_{obj}}}`$&nbsp;&nbsp;
 You know $`\overline{SA_{obj}}`$ , calculate $`\overline{SA_{ima}}`$ using (equ. 1) 
 then $`\overline{M_T}`$ with (equ.2), and deduce $`\overline{A_{ima}B_{ima}}`$.
 
-! *USEFUL 1° :<br>
+! *USEFUL 1* :<br>
 ! The conjunction equation and the transverse magnification equation for a plane mirror 
 ! are obtained by rewriting these two equations for a spherical mirror in the limit when
 ! $`|\overline{SC}|\longrightarrow\infty`$.
 ! Then we get for a plane mirror : $`\overline{SA_{ima}}=\overline{SA_{obj}}`$ and
 ! $`\overline{M_T}=+1`$.
 
-! *USEFUL 2° :<br>
-! *You can find* the conjunction and the transverse magnification **equations for a plane mirror directly from 
-! those of the spherical mirror**, with the following assumptions :<br>
+! *USEFUL 2* :<br>
+! *You can find* the conjunction and the transverse magnification *equations for a plane mirror directly from 
+! those of the spherical mirror*, with the following assumptions :<br>
 ! $`n_{eme}=-n_{inc}`$<br>
 ! (to memorize : medium of incidence=medium of emergence, therefor same speed of light, but direction
 ! of propagation reverses after reflection on the mirror)<br>