module 3 vocabulary

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Across
  1. 9. A symbol for a value we dont know yet.
  2. 13. An angle is formed when two lines intersect each other.
  3. 14. expressions that work the same even though they look different
  4. 15. Terms whose variables with any exponents are the same.
  5. 16. each of the pairs of opposite angles made by two intersecting lines.
  6. 18. an angle that is equal to 180 degrees.
Down
  1. 1. used to indicate that a particular collection of numbers and meaningful operations are to be grouped together and considered as one number
  2. 2. either of two angles whose sum is 180°.
  3. 3. either of two angles whose sum is 90°.
  4. 4. angles that share the common vertex and side.
  5. 5. the sum of angles that can be arranged together so that they form a full turn.
  6. 6. the set of all the solutions of an equation or condition.
  7. 7. a mathematical sentence made up of numbers and symbols
  8. 8. Numbers, symbols and operators grouped together that show the value of something.
  9. 10. An inequality compares two values, showing if one is less than, greater than, or simply not equal to another value.
  10. 11. Numbers that can multiply together to get another number.
  11. 12. a single mathematical expression.
  12. 15. formed when two lines intersect each other at a single point.
  13. 17. a statement that the values of two mathematical expressions are equal.