+An **imaginary number** is a quantity that, when squared, produces a negative result. It extends the concept of [Real Number](/wiki/real_number) beyond the traditional number line, rooted in the [Imaginary Unit](/wiki/imaginary_unit) *i*. These numbers are essential for forming [Complex Number](/wiki/complex_number) and describing phenomena across various scientific fields.
+## See also
+- [Complex Number](/wiki/complex_number)
+- [Complex Plane](/wiki/complex_plane)
+- [Number System](/wiki/number_system)
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