Maths

4. Highest Common Factor
7. A set of whole numbers
9. Any number that can be written in p/q form
10. Method of eliminating one of the variables
11. A natural number greater than one that has no divisor other than one itself
13. Two lines that do not meet
14. An ________ is an equality containing one or more variable
15. Method of substituting one variable to solve the other
17. Least Common Multiple
18. Any number that cannot be written in the p/q form
20. Procedure or formula for solving a problem

1. The sum of its positive divisor excluding the number itself is known as ______ number
2. Two lines that lie on top of one another
3. A statement that has been proven
5. A curve formed by all points
6. Tow or more lines that meet at a point
8. A polynomial of degree 1
12. Any integer that is greater than one and is not a prime number
16. A decimal number that has digits that do not go on
19. A _____ is a proven statement used for proving another statement