Types of angles

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Across
  1. 3. An angle that is exactly 180 degree
  2. 6. A polygon with three angles
  3. 7. The point where two lines meet
  4. 9. Unit used to measure angles
  5. 10. An angle greater than 90 degree but less than 180 degree
Down
  1. 1. A tool to measure angles
  2. 2. An angle less than 90 degree
  3. 4. An angle greater than 180 degree
  4. 5. A straight path that extends forever
  5. 8. An angle exactly 90 degrees