# L.E.G.O. - An interactive graphics system for teaching
geometry and computer graphics

Norma Fuller and Przemyslaw Prusinkiewicz
## Abstract

L.E.G.O. is an interactive graphics system for creating,
viewing and manipulating two-dimensional geometric figures
and three-dimensional objects. The fundamental operations
of the L.E.G.O. language form an electronic metaphor of
geometric constructions with a straightedge and compass.
This is consistent with the primary application of L.E.G.O.,
i.e. computer-assisted instruction of geometry. L.E.G.O. is
also useful when teaching or studying other areas difficult to
grasp without good visual aids, such as mechanics and computer
graphics. The system can be used both as an interactive
environment for experimenting with geometric constructions
and as a tool for preparing illustrations.

## Reference

N. Fuller and P. Prusinkiewicz: L.E.G.O. - An interactive graphics
system for teaching geometry and computer graphics. *Proceedings of
CIPS 1986*.
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