diff --git a/exercise3/Theorie.pdf b/exercise3/Theorie.pdf
index 5919054..e77f1c6 100644
Binary files a/exercise3/Theorie.pdf and b/exercise3/Theorie.pdf differ
diff --git a/exercise3/Theorie.tex b/exercise3/Theorie.tex
index b2e08f0..1bd4d96 100644
--- a/exercise3/Theorie.tex
+++ b/exercise3/Theorie.tex
@@ -21,7 +21,7 @@ headsep=10mm, footskip=12mm}
 \section*{Computer Graphics - Excercise 2}
 \subsection*{3.1.1}
 \subsection*{(a)}
-The more obtuse the triangle, the more acute the angle of the corner of the voronoi area gets. Because the both sides of this corner has to be in a 90° angle to the sides of the traingle. 
+The more obtuse the triangle, the more acute the angle of the corner of the voronoi area gets. Because the both sides of this corner have to be in a 90° angle to the sides of the traingle. 
 \subsection*{(b)}
 The formula for calculating the surface of a triangle is: $\frac{1}{2}*h*b$
 As for the red triangle: $\frac{1}{2}*h*b$