geometry crossword

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Across
  1. 2. a flat surface that has no thickness and extends forever
  2. 4. The distance around a circle
  3. 7. extends in opposite directions without end
  4. 8. the length between two points
  5. 9. A point that divides a segment into two congruent segments
  6. 13. Intersecting at or forming right angles
  7. 14. a ray that divides an angle into two congruent angles
  8. 15. points that lie on the same line
  9. 16. near, next to, adjoining
  10. 19. very different from
  11. 21. exactly 90 degrees
  12. 22. coplanar lines that do not intersect
  13. 23. a statement that can be proven
  14. 24. less than 90 degrees
  15. 25. Two angles whose sum is 180 degrees
  16. 26. the longest side of a right triangle
  17. 27. points that lie on the same plane
  18. 30. All whole numbers (both positive and negative) and zero.
  19. 31. a statement that is accepted as true without proof
Down
  1. 1. if and only if
  2. 3. a line that intersects two or more coplanar lines at different points
  3. 5. the point where lines cross
  4. 6. part of a line
  5. 10. The distance around a figure
  6. 11. Having the same measure
  7. 12. triangle a triangle with at least two congruent sides
  8. 14. when points are on the same line
  9. 17. same side of the transversal and in corresponding positions
  10. 18. over 90 degrees
  11. 20. noncoplanar, not parallel, dont intersect
  12. 24. The number of square units required to cover a surface.
  13. 28. A part of a line, with one endpoint, that continues without end in one direction
  14. 29. two rays with a common endpoint