10: Inversion Last updated Sep 5, 2021 Save as PDF 9.6: Tangent half-lines 10.1: Inversion Page ID23646 Anton PetruninPennsylvannia State University ( \newcommand{\kernel}{\mathrm{null}\,}\) 10.1: Inversion10.2: Cross-ratio10.3: Inversive plane and circlines10.4: Method of inversion10.5: Perpendicular circles10.6: Angles after inversion