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 755fc94eb..3c7e10099 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
@@ -39,7 +39,7 @@ so they are the *most common and cheap*.
of a *spherical mirror of infinite radius of curvature*.
Plane mirror, concave and convex spherical mirror
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+
Fig. 1. a) plane b) concave c) convex mirrors
#### Are plane and spherical mirrors stigmatic?
@@ -57,13 +57,13 @@ Fig. 1. a) plane b) concave c) convex mirrors
* coming from an object point generally do not converge towards an image
* point (see Fig. 2.)
*
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+
Fig. 2. Non stigmatism of a convexe mirror.
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+
Fig. 3. But when we limit the aperture of the mirror,
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Fig. 4 . and limit the conditions of use to small angles of incidence and
refraction are small, then a point image can be defined : the mirror becomes
quasi-stigmatic.
@@ -150,16 +150,16 @@ side* of the mirror.
* with **real objects**
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+
Fig. 5. Concave mirror with object between infinity and C
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Fig. 6. Concave mirror with object between C and F/F’
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Fig. 7. Concave mirror with object between F/F’ and S
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Fig. 8. Convex mirror