\input zb-basic
\input zb-matheduc
\iteman{ZMATH 1999f.04258}
\itemau{Austin, Joe Dan}
\itemti{Locus of Triangle Vertices.}
\itemso{Math. Teach. (Reston) 91, No. 6, 474-76 (1998).}
\itemab
Summarizes and extends a well-known geometry theorem that states that any triangle inscribed in a circle with one side of the triangle a diameter of the circle, is a right triangle. (ERIC)
\itemrv{~}
\itemcc{G43}
\itemut{thales circle}
\itemli{}
\end