Rectangular form, also known as Cartesian form, is a way of representing complex numbers using a pair of real numbers. It expresses a complex number as $$z = a + bi$$, where $$a$$ is the real part and $$b$$ is the imaginary part, allowing for straightforward visualization and manipulation in the two-dimensional complex plane. This representation provides an essential link to operations involving complex numbers, facilitating calculations and conversions between different forms.
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