removed sphere geometry added minkowski

1 files changed, 2 insertions, 0 deletions

diff --git a/geometry/geometry.tex b/geometry/geometry.tex
index 1201917..e52e454 100644
--- a/geometry/geometry.tex
+++ b/geometry/geometry.tex
@@ -38,8 +38,10 @@
 \subsection{Formeln - 3D}
 \sourcecode{geometry/formulars3d.cpp}
 
+\optional{
 \subsection{3D-Kugeln}
 \sourcecode{geometry/spheres.cpp}
+}
 
 \optional{
 \subsection{Geraden}