+The **Imaginary Axis** is a number line that represents the imaginary part of a [Complex Number](/wiki/Complex_Number). Perpendicular to the [Real Axis](/wiki/Real_Axis), it forms the vertical dimension of the complex plane, extending infinitely in both positive and negative imaginary directions.
+## See also
+- [Complex Plane](/wiki/Complex_Plane)
+- [Imaginary Number](/wiki/Imaginary_Number)
+- [Complex Analysis](/wiki/Complex_Analysis)
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