6: Similar triangles Last updated Sep 5, 2021 Save as PDF 5.7: Geometric constructions 6.1: Similar triangles Page ID23618 Anton PetruninPennsylvannia State University ( \newcommand{\kernel}{\mathrm{null}\,}\) 6.1: Similar triangles6.2: Pythagorean theorem6.3: Method of similar triangles6.4: Ptolemy's inequality