Hi, I'm trying to get the same result for this file compiled with latex. Thanks. Fabrice \documentclass{article}\usepackage{amsmath} \begin{document} \begin{alignat*}{2}&\qquad& \frac{\lvert\overline{AD}\rvert}{\lvert\overline{CD}\rvert} &=\frac{\lvert\overline{DC}\rvert}{\lvert\overline{CE'}\rvert}\\\iff&& \frac{1}{x}&=\frac{x}{1-x}\\\iff&& 1-x&=x^2\\\iff&& 0&=x^2+x-1\end{alignat*} \end{document} \starttext \startformula \startmathalignment[n=3] \NC \qquad \NC\frac{\lvert\overline{AD}\rvert}{\lvert\overline{CD}\rvert} \NC =\frac{\lvert\overline{DC}\rvert}{\lvert\overline{CE'}\rvert}\NR \NC \iff \NC \frac{1}{x} \NC =\frac{x}{1-x} \NR \NC \iff \NC 1-x \NC =x² \NR \NC \iff \NC 0\NC =x²+x-1 \NR \stopmathalignment \stopformula \stoptext