Geometry Terms (Chapters 1-3)

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Across
  1. 5. the corner/intersection of an angle
  2. 7. a 10 sided shape
  3. 10. statements accepted without proof
  4. 12. the sum of all exterior angles of a polygon is 3___
  5. 14. if-then statement
  6. 16. reasoning which is based on observation
  7. 17. AB + BC = AC is the segment ___ postulate
  8. 20. a flat surface that goes on infinitely
  9. 23. an angle between 0 and 90 degrees
  10. 27. a triangle with two equal sides
  11. 30. a triangle with all sides equal
  12. 32. a five sided shape
  13. 33. property of equality
  14. 35. an angle between 90 and 180 degrees
  15. 38. a ray that cuts an angle in half
  16. 39. vertical angles are ___
  17. 40. an equiangular and equilateral polygon
  18. 41. ___ interior angles are on opposite sides of the transversal
Down
  1. 1. points on the same line
  2. 2. angles whose sum is 180
  3. 3. comes after the hypothesis
  4. 4. the operation used to find the distance between two coordinates
  5. 6. parallel planes do not ___
  6. 8. a point that cuts a segment in half
  7. 9. same size and same shape
  8. 11. a line that cuts through coplanar lines
  9. 13. lines that form right angles
  10. 15. has length and goes infinitely in both directions
  11. 18. If a=b and b=c then a=c.
  12. 19. on the same plane
  13. 20. "many angles"
  14. 21. helping line
  15. 22. same-side interior angles are ___
  16. 24. a symbol used to show location
  17. 25. if corresponding angles are congruent, then the lines are ___
  18. 26. angles whose sum is 90
  19. 28. no sides in a triangle are congruent
  20. 29. a portion of a line
  21. 31. opposite rays share what?
  22. 34. parallel lines don't intersect and are ___
  23. 36. lines in different planes
  24. 37. a figure formed by two rays that have the same endpoint