Mathematical Vocabulary Crossword Puzzle

12345678
Across
  1. 4. The operation that is the inverse of multiplication.
  2. 6. The total distance around the boundary of a shape.
  3. 7. A figure formed by two rays with a common endpoint.
  4. 8. A geometric shape with straight sides.
Down
  1. 1. A mathematical statement showing equality between two expressions.
  2. 2. Number A number that has only two factors: 1 and itself.
  3. 3. Root A number that, when multiplied by itself, results in a given number.
  4. 5. A mathematical expression that represents a part of a whole.