Geometry

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Across
  1. 2. shape with three sides
  2. 5. expands in opposite directions endlessly
  3. 6. points that lie on the same plane
  4. 8. a line with a start and no end
  5. 12. points on the same line
  6. 15. lines that form four 90 degrees angles
  7. 17. equal
  8. 18. a shape with four sides
  9. 19. the middle of a circle
  10. 20. continuous portion of a circle
Down
  1. 1. the class you just took
  2. 3. two lines that never touch
  3. 4. set of points which has infinite length
  4. 7. an angle bigger than 90 degrees
  5. 9. a ray that divides an angle
  6. 10. a shape with no sides
  7. 11. angle smaller than 90 degrees
  8. 13. shape with 4 equal sides
  9. 14. the middle of a line
  10. 16. a line with a beginning and end