Geometry Crossword Puzzle

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Across
  1. 1. a(b+c)=ab+bc
  2. 4. rays with the same endpoint that lie on the same line and go in opposite directions
  3. 8. 2 angles that add up to 180
  4. 11. both statements have the same truth value
  5. 14. a pair of angles whose sides are opposite rays
  6. 17. an if then statement that relates a hypothesis to a conclusion
  7. 19. the part of a line that consists of one endpoint and all the points of the line on one side of the point
  8. 21. the opposite meaning of the original statement
  9. 23. obtained by negating both the hypothesis and conclusion of a conditional
  10. 24. 2 angles that add up to 90
  11. 26. if a=b and b=c then a=c
  12. 27. an example that shows that a statement is false
  13. 29. the part of a line that consists of 2 points called endpoints and all the points between them
  14. 32. reaching a conclusion based on a pattern of specific examples based on
  15. 34. given 2 true conditionals with the conclusion of the first being the hypothesis of the second, there is a third true conditional having the hypothesis of the first and the conclusion of the second
  16. 35. an unproven statement or rule based on observation or examples
  17. 37. lines intersect at right angles
  18. 38. a conjecture that is proven
Down
  1. 2. where two rays or line segments meet
  2. 3. a location and represented by a dot
  3. 5. if a=b then b can replace a in any expression
  4. 6. points points that lie on the same line
  5. 7. the point that divides the segment into 2 congruent segments
  6. 9. an infinite number of points and lines on a flat surface that extends with no end
  7. 10. a=a (everything =’s itself)
  8. 12. a co planar line that intersects 2 or more lines at different points
  9. 13. a line, ray, or segment that is perpendicular to the segment and divides the segment into 2 congruent segments
  10. 15. if a=b, then b=a
  11. 16. an infinite number of points on a straight path that extends with no end
  12. 18. obtained by taking the converse and negating both the hypothesis and conclusion
  13. 20. a ray that divides an angle into 2 congruent angles
  14. 22. a rule we accept as true but cannot be proven
  15. 25. follows “then”
  16. 28. lines that never intersect
  17. 30. 2 adjacent angles that form a line
  18. 31. if a conditional statement and its hypothesis are true, then the conclusion is also true
  19. 33. 2 angles that are the same
  20. 35. reverses the hypothesis and conclusion of a conditional
  21. 36. follows “if”