⇒ You can represent complex numbers on an Argand diagram. The x-axis on an Argand diagram is called the real axis and the y-axis is called the imaginary axis.

⇒ The complex number z = x + iy is represented on the diagram by the point P(x, y), where x and y are Cartesian coordinates

⇒ Complex numbers can be represented as vectors on the Argand diagram

⇒ You can add or subtract complex numbers on an Argand diagram by adding or subtracting their corresponding vectors

⇒ Also see our notes on:

• Modulus and Argument
• Modulus-Argument form of Complex Numbers
• Loci in the Argand Diagram
• Regions in the Argand Diagram