Exploring Tetrahedra Part 1

This edition's Geometers Corner has two objectives.

First, it will develop a set of exercises that make use of many of the features of GeoGebra's 3D [1].

Second, it will serve as an introduction to some of the geometric properties possessed by tetrahedra, the three-dimensional equivalent of the triangle in two-dimensional space. This is the first of a two-part series dedicated to the constructive study of tetrahedra.