\[ a = c + x + y \]	\[ b = \frac{h}{\sin(\beta)} \]
\[ d = \sqrt{h^2 + y^2} \]	\[ h = \sin({\alpha}) \cdot d \]
\[ c = a - x - y \ \ \ \text{oder} \ \ \ c = \sqrt{h^2 + x^2} \]
\[ x = \sqrt{d^2 - h^2} \]	\[ y = \sqrt{b^2 - h^2} \]

\[ \alpha = 180° - \delta \]	\[ \gamma = 180° - \beta \]
\[ \beta = 180° - \gamma \]	\[ \delta = 180° - \alpha \]

\[a = d \cdot \sin\left(\frac{f}{2}\right)\]	\[b = \sqrt{d^2 - a^2}\]
\[d = \sqrt{a^2 - b^2}\]

\[\phi = \arctan\left(\frac{b}{a}\right) \]

\[ a = \sqrt{\left(\frac{e}{2}\right)^2 + \left(\frac{f}{2}\right)^2 } \]
\[ f = 2 \cdot a \cdot \sin\left(\frac{\alpha}{2}\right) \]	\[ e = 2 \cdot a \cdot \cos\left(\frac{\alpha}{2}\right) \]

\[ \alpha = 2 \cdot \arctan\left(\frac{\frac{f}{2}}{\frac{e}{2}}\right) \]	\[ \beta = 180° - \alpha \]

\[ e_1 = \sqrt{a^2 - \left(\frac{f}{2}\right)^2} \]	\[ e_2 = e - e_1 \]
\[ b = \sqrt{e_2^2 - \left(\frac{f}{2}\right)^2} \]

\[ \alpha = \arcsin\left(\frac{\frac{f}{2}}{a}\right) \cdot 2 \]	\[ \gamma = \arcsin\left(\frac{\frac{f}{2}}{b}\right) \cdot 2 \]
\[ \beta + \delta = 360° - \alpha - \gamma \]