posted Sep 16, 2012, 7:27 AM by Tim Isbell
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updated Oct 15, 2015, 6:51 PM
]

At various points along the math journey, every student learns the subcategories of the Real Number System. Here's a picture to help you understand it.

Algebra 2 students learn that there are also Imaginary Numbers. These are the way mathematicians represent the square roots of negative numbers.