Math Vocabulary Words

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Across
  1. 3. The length of a segment that connects a vertex of the triangle to a line containing the opposite base (side) and is perpendicular to that line
  2. 5. An operation that tells how many objects there are when two sets are combined
  3. 6. An angle with a measure greater than 0º and less than 90º. An example is shown below.
  4. 7. The number you need to add to a given number to get a sum of 0
  5. 8. An algebra tile is a manipulative whose area represents a constant or variable quantity
Down
  1. 1. The absolute value of a number is the distance of the number from zero
  2. 2. A block used to represent one whole or 100%.
  3. 3. A branch of mathematics that uses variables to generalize the rules of numbers and numerical operations
  4. 4. A triangle with all three angle measures less than 90º
  5. 8. A fixed rule for carrying out a mathematical procedure