An oval is a curve resembling a squashed Circle but, unlike the Ellipse, without a precise mathematical definition. The word oval derived from the Latin word ``ovus'' for egg. Unlike ellipses, ovals sometimes have only a single axis of reflection symmetry (instead of two).

Ovals can be constructed with a Compass by joining together arcs of different radii such that the centers of the arcs lie on a line passing through the join point (Dixon 1991). Albrecht Dürer used this method to design a Roman letter font.

**References**

Critchlow, K. *Time Stands Still.* London: Gordon Fraser, 1979.

Cundy, H. and Rollett, A. *Mathematical Models, 3rd ed.* Stradbroke, England: Tarquin Pub., 1989.

Dixon, R. *Mathographics.* New York: Dover, pp. 3-11, 1991.

Dixon, R. ``The Drawing Out of an Egg.'' *New Sci.*, July 29, 1982.

Pedoe, D. *Geometry and the Liberal Arts.* London: Peregrine, 1976.

© 1996-9

1999-05-26