mod 3 math vocab

3. a mathematical sentence made up of numbers and symbols
6. angle is formed when two lines intersect each other
9. angels that share the common vertex and side
13. either a single number or variable, or numbers and variables multiplied together
14. consists of unknown variables, numbers and arithmetic operators
15. a mathematical statement that shows that two mathematical expressions are equal
16. a number that divides another number, leaving no remainder
17. when two lines intersect each other at a single point
19. symbols used to indicate that a particular collection of numbers and meaningful operations are to be grouped together and considered as one number

1. an angle that is equal to 180 degrees
2. when their measures add to 90 degrees
4. the sum of angles that can be arranged together so that they form a full turn
5. angles opposite each other where two lines cross
7. terms whose variables (and their exponents) are the same
8. a quantity that can be changed and is not fixed
10. expressions that work the same even though they look different
11. measures add up to 180 degrees
12. the set of values that satisfy a given set of equations or inequalities
18. a relationship between two expressions or values that are not equal to each other