Part 5/6:
Real numbers encompass all the numbers on the number line, including both rational and irrational numbers. The category of real numbers is inclusive of all integers, fractions, and decimal values that are not imaginary. Therefore, real numbers include numbers like -21, 567, or even π.
Imaginary Numbers
To contrast, imaginary numbers are defined as involving the square root of negative one (denoted as "i"). Their characteristics set them apart from real numbers, which consist solely of actual quantities on the number line.