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