mod 3 math vocab

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Across
  1. 2. expressions that work the same even though they look different
  2. 5. symbols used to indicate that a particular collection of numbers and meaningful operations are to be grouped together and considered as one number
  3. 6. consists of unknown variables, numbers and arithmetic operators
  4. 7. a quantity that can be changed and is not fixed
  5. 9. the set of values that satisfy a given set of equations or inequalities
  6. 11. an angle that is equal to 180 degrees
  7. 12. either a single number or variable, or numbers and variables multiplied together
  8. 14. the sum of angles that can be arranged together so that they form a full turn
  9. 16. angles opposite each other where two lines cross
  10. 17. a mathematical sentence made up of numbers and symbols
  11. 19. angle is formed when two lines intersect each other
Down
  1. 1. when two lines intersect each other at a single point
  2. 3. angels that share the common vertex and side
  3. 4. when their measures add to 90 degrees
  4. 8. terms whose variables (and their exponents) are the same
  5. 10. measures add up to 180 degrees
  6. 13. a mathematical statement that shows that two mathematical expressions are equal
  7. 15. a relationship between two expressions or values that are not equal to each other
  8. 18. a number that divides another number, leaving no remainder