diff --git a/exercise3/Theorie.pdf b/exercise3/Theorie.pdf
index c2fc042..9e044e7 100644
Binary files a/exercise3/Theorie.pdf and b/exercise3/Theorie.pdf differ
diff --git a/exercise3/Theorie.tex b/exercise3/Theorie.tex
index 72944fe..5e3339b 100644
--- a/exercise3/Theorie.tex
+++ b/exercise3/Theorie.tex
@@ -23,9 +23,9 @@ headsep=10mm, footskip=12mm}
 \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. 
 \subsection*{(b)}
-The formula of triangle is: $\frac{1}{2}*h*b$
+The formula for calculating the surface of a triangle is: $\frac{1}{2}*h*b$
 As for the red triangle: $\frac{1}{2}*h*b$
-with: $h=\frac{||p_i - p_j||}{2}$ and $b=$
+with: $h=\frac{||p_i - p_j||}{2}$ and $b=b_1 + b_2$ where $b_1$ is left part of the baseline facing $\alpha_{ij}$ and $b_2$ is the right one facing $\beta_{ij}$.\\
 
 \subsection*{(c)}