Types of angles

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Across
  1. 1. Two angles that add up to 180 degrees
  2. 4. Line that divides an angle into two equal parts
  3. 5. Lines that never intersect and remain the same distance apart
  4. 6. Angles in the same position on two parallel lines cut by a transversal
  5. 8. Tool used to measure and draw angles
  6. 10. Angles inside two parallel lines cut by a transversal
  7. 11. Angle measuring greater than 180 degrees but less than 360 degrees
  8. 12. Angle measuring exactly 180 degrees
  9. 14. Unit used to measure angles, with a full circle equal to 360 degrees
  10. 15. Two angles that add up to 90 degrees
  11. 17. Lines that intersect at a 90-degree angle
  12. 19. Angles outside two parallel lines cut by a transversal
Down
  1. 2. Angles on opposite sides of a transversal between two parallel lines
  2. 3. Line that crosses two or more parallel lines
  3. 7. Angle measuring greater than 90 degrees but less than 180 degrees
  4. 9. Angles that have the same measure
  5. 11. Angle measuring exactly 90 degrees
  6. 13. Angles that share a common vertex and side but do not overlap
  7. 16. Angle measuring less than 90 degrees
  8. 18. Opposite angles formed by intersecting lines, measuring 90 degrees each