Mathematics Terms - Angles

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Across
  1. 4. the instrument used to measure angles
  2. 5. the unit used to measure angles
  3. 6. an angle measuring more than 180 degrees but less than 360 degrees
  4. 7. this is formed by two rays with a common start point
  5. 9. This angle measures exactly 90 degrees
Down
  1. 1. an angle that measures exactly 180 degrees
  2. 2. this measures exactly 360 degrees
  3. 3. angle that measures more than 90 degrees but less than 180 degrees
  4. 7. an angle that measures less than 90 degrees
  5. 8. the common start point of the two rays that form the angle