TeX Quellcode:

\begin{array}{rcl}\alpha + \beta + \gamma &=& \dfrac{11\pi}{18} +70^\circ +\dfrac{17\pi}{18} \\\alpha + \beta + \gamma &=& 110^\circ +70^\circ +170^\circ \\\alpha + \beta + \gamma &=& 350^\circ \\\alpha + \beta + \gamma & < & 360^\circ \\\end{array}