Pairings of circles and Sawayama's theorem - Paris Pamfilos In this article we study pairs of projectively related circles, tangent to a fixed circle, and point out properties, which in a class of particular cases specialize to Sawayama's theorem. ✪ ✪ ✪ ✪ ✪ Hidden Content: **Hidden Content: Content of this hidden block can only be seen by members of (usergroups: V.I.P Downloader).** Theo LTTK Education