what are real numbers

Let us study what are real numbers,

Real Numbers are just numbers like:

1

12.38

-0.8625

3/4

√2

1998

In fact:

Nearly any number you can think of is a Real Number

Real Numbers include:

	Whole Numbers (like 1,2,3,4, etc)
	Rational Numbers (like 3/4, 0.125, 0.333..., 1.1, etc )
	Irrational Numbers (like π, √3, etc )

Real Numbers can also be positive, negative or zero.

So ... what is NOT a Real Number?

	√-1 (the square root of minus 1) is not a Real Number, it is an Imaginary Number
	Infinity is not a Real Number
And there are also some special numbers that mathematicians play with that are not Real Numbers I hope the above explanation was useful, now let me explain about Similar polygons.