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 a8b26160c..aff131d7d 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
@@ -77,6 +77,8 @@ dimension $`n`$ se notent $`(x^1,x^2, ..., x^n)`$, et de façon abrégée $`x^a`
 
 
 
+
+
 #### Invariant et métrique d'une variété