TeX Quellcode:

\begin{array}{rcl}\alpha + \beta + \gamma &=& \dfrac{5\pi}{4} +90^\circ +\dfrac{7\pi}{12} \\\alpha + \beta + \gamma &=& 225^\circ +90^\circ +105^\circ \\\alpha + \beta + \gamma &=& 420^\circ \\\alpha + \beta + \gamma &>& 360^\circ \\\end{array}