Commit a6668ca6 authored by Claude Meny's avatar Claude Meny

Update cheatsheet.en.md

parent abf1f0d9
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......@@ -39,5 +39,6 @@ so they are the *most common and cheap*.
of a *spherical mirror of infinite radius of curvature*.
Plane mirror, concave and convex spherical mirror
![](plane-concave-convex-mirrors.png)
Fig. 1. a) plane b) concave c) convex mirrors
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