Basic Geometry Terms

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Across
  1. 5. two angles whose sum is 180 degrees
  2. 7. where lines cross over a common point
  3. 10. a straight path that has a beginning but not an end
  4. 13. angles that are opposite each other when two lines intersect
  5. 14. when a figure is folded in half and the two halves match perfectly
  6. 16. a point where two angles begin or meet
  7. 17. an angle that measures 180 degrees
  8. 20. two lines that never cross or touch
  9. 21. an angle that measures more than zero degrees but less than 90
Down
  1. 1. an angle that measures more than 90 degrees but less than 180
  2. 2. the middle point
  3. 3. two lines that form right angles where they intersect
  4. 4. two rays that have a common end point
  5. 6. a straight path that goes on infinitely in either direction
  6. 8. a line that goes from side to side
  7. 9. a straight path that has a beginning and an ending
  8. 11. a unit used to measure an angle
  9. 12. a line that goes up and down
  10. 15. two angles whose sum is 90 degrees
  11. 18. two angles that are next to each other
  12. 19. never ending