Программа для.. черчения, что ли.

Debian & apt-cache search твои друзья :-)

drgeo
Description: An interactive geometry software
 This is the Gtk interactive geometry software. It allows one
 to create geometric figure plus the interactive manipulation of such
 figure in respect with their geometric constraints. It is usable in
 teaching situation with students from primary or secondary level.
 .
 Dr. Geo comes with a complete set of tools arranged
 in different categories:
 .
  * points
  * lines
  * geometric transformations
  * numeric function
  * macro-construction
  * DGS object - Dr. Geo Guile Script
  * DSF - Dr Geo Scheme Figure, it is interactive figure defined in
  a file and evaluated with the embedded Scheme interpretor, awesome!
  * Export facilities in the LaTeX and EPS formats
 .
 Several figures and macro-constructions examples are available
 in the /usr/share/drgeo/examples folder.
 .
 More information about Dr. Geo can be found at
 its web site http://www.ofset.org/drgeo


kig
Description: interactive geometry program for KDE
 Kig is an application for interactive geometry.  It is intended to
 serve two purposes:
 .
  - to allow students to interactively explore mathematical figures and
    concepts using the computer;
  - to serve as a WYSIWYG tool for drawing mathematical figures and
    including them in other documents.
 .
 With this program you can do geometry on a computer just like you
 would on a blackboard in a classroom.  However, the program allows
 you to move and change parts of a geometrical drawing so that you can
 see how the other parts change as a result.
 .
 Kig supports loci and user-defined macros.  It also supports imports
 and exports to/from foreign file formats including Cabri, Dr. Geo,
 KGeo, KSeg and XFig.

Всё время забываю про это. А вещь-то посильнее гугля. Спасибо за подсказку.