## Plane Curves

Curves in the euclidean plane with special geometric or mechanical properties.
Curves which are not mainly described by algebraic formulas.
#### References

- Manfredo P. do Carmo:
*Differential Geometry of Curves and Surfaces*,
Prentice-Hall Englewood Cliffs, NJ (1976).
- Alfred Gray:
*Modern Differential Geometry of Curves and Surfaces*,
CRC Press (1994).

#### Technical Note

As a guide, polygons should be connected, no degenerate edges, no duplicate vertices.