Linked from
The 8 pages that link to Polar form, each with the reason it gives.
Complex planeRelated: It makes rotations and scalings under multiplication explicit.
Euler's formulaRelated: Euler's identity converts polar form into an exponential expression.
Imaginary unitRelated: In polar form, i has magnitude one and angle π/2.
Complex modulusRelated: The modulus is the magnitude coordinate in this representation.
Abraham de MoivreRelated: Writing complex numbers by angle makes de Moivre’s power rule transparent.