ALL GEOMETRY

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Across
  1. 2. An arc whose endpoints are on the exterior of a central angle(>180)
  2. 4. Divides an angle into two congruent angles
  3. 5. Segment joining two points on the circumference of a circle
  4. 10. Line that intersects a circle at a single point
  5. 13. When the outcome of the first event affects the outcome of the second event
  6. 14. An angle equal to 180 degrees
  7. 16. When one event does not affect the result of another event
  8. 17. All vertices lie on the circle
  9. 19. Two angles that sum up to 90 degrees
  10. 20. An angle whose vertex is the center of the circle
Down
  1. 1. Consist of the outcome of one event
  2. 3. Distance around the circle
  3. 6. Portion of the circumference
  4. 7. Vertex is on the circle, sides are chords
  5. 8. Figures that are identical in shape and size
  6. 9. It's formula is, πr2
  7. 11. 90 degree angle
  8. 12. An arc whose endpoints lie on a diameter
  9. 15. An arc whose endpoints are on the interior of a central angle
  10. 18. Where two rays/segments meet