Math terms

3. algebraic expression made up of one term.
4. total distance around the outside of a polygon.
6. the horizontal axis in a coordinate plane.
10. sum of two or more monomials.
12. a three-sided polygon.
13. Angle,An angle measuring between 90° and 180°.
15. a list of numbers are the values that occur most frequently.
19. top number in a fraction. The numerator is divided into equal parts by the denominator.
20. Angle,An angle equal to 90°.
21. a letter used to represent a numerical value in equations and expressions.

1. the vertical axis in a coordinate plane.
2. straight line with only one endpoint that extends infinitely.
5. number is the product of that number and any other whole number.
7. shows the steepness or incline of a line and is determined by comparing the positions of two points on the line
8. Number,A number less than zero denoted with the symbol -.
9. Numbers,are integers greater than 1 that are only divisible by themselves and 1.
11. Number,A whole number that is not divisible by 2.
14. two halves that match perfectly and are identical across an axis.
16. Number,A whole number is a positive integer.
17. Line,A line whose points correspond to numbers.
18. point of intersection between two or more rays, often called a corner.