Real Numbers

2. The largest common factor of two or more numbers.
5. A positive integer that is equal to the sum of its proper positive divisors ie, the sum of its positive divisors excluding the number itself
6. (Helping Theorem)Proven proposition which is used as a stepping stone to a larger result rather than as a statement of interest by itself.
9. Any real number that cannot be expressed as a ratio of integers.
10. the smallest number (not zero) that is a multiple of two numbers.
11. Two lines or shapes that lie exactly on top of each other. It has infinite solutions.
12. Any number that can be expressed as the quotient or fraction of two integers,with the denominator not equal to zero.

1. Two or more lines that meet at a point. It has a unique solution.
3. A positive integer that has at least one positive divisor other than one or the number itself.
4. Pprocedure or formula for solving a problem
7. It's a decimal with a finite number of digits. It has an end.
8. Natural number greater than 1 that has no positive divisors other than 1 and itself.