The plane of Complex Numbers spanned by the vectors 1 and , where is the Imaginary Number. Every Complex Number corresponds to a unique Point in the complex plane. The Line in the plane with is the Real Line. The complex plane is sometimes called the Argand Plane or Gauss Plane, and a plot of Complex Numbers in the plane is sometimes called an Argand Diagram.

**References**

Courant, R. and Robbins, H. ``The Geometric Interpretation of Complex Numbers.'' §5.2 in
*What is Mathematics?: An Elementary Approach to Ideas and Methods, 2nd ed.*
Oxford, England: Oxford University Press, pp. 92-97, 1996.

© 1996-9

1999-05-26