GCLC

GCLC is a program for visualising and exploring geometry. Its material is the ordinary content of the subject — points, lines, circles and the relations that hold between them — presented so that a construction can be built up step by step and then examined, rather than only read from a static illustration. The typical use is working through geometric problems, whether by a student following a construction, a teacher preparing figures, or anyone who wants to see how a diagram changes as its parts change.

The published summary is short, so details such as the input format, the range of constructions available and the output or export options are best confirmed against the project's own documentation before adopting it for coursework or publishing.

The listing here is the Linux build. GCLC is published by the ADG Foundation under the MIT licence, which permits reading, modifying and redistributing the source under those terms.