\input zb-basic
\input zb-matheduc
\iteman{ZMATH 2007a.00320}
\itemau{Choate, Jonathan}
\itemti{Tetrahedral treats.}
\itemso{Consortium, No. 89, 5-9 (2005).}
\itemab
Summary: Computer algebra systems and 3D construction software make the study of solid geometry accessible to more students. A TI-89 graphing calculator $\lbrack{}$or Mathematica, which is used in this article since the visual display of Mathematica is cleaner than that of the TI-89$\rbrack{}$ allows quick computations that would be tedious and time-consuming if done by hand. This Geometer's Corner is about how you can use Cabri 3D, a 3D construction program, and a computer algebra system such as that on a TI-89 to study tetrahedra.
\itemrv{~}
\itemcc{G40 R20}
\itemut{tetrahedra; solid geometry; geometry software; graphics calculators; centroid; Commandino's theorem; circumcenter; incenter; orthocenter; Monge point}
\itemli{}
\end