Across
- 2. of concurrency
- 6. point
- 8. Angle Inequality theorem
- 10. concurrency for the medians of a trangle
- 11. and Division Properties
- 14. segment that divides an angle or a side into two parts of equal measures
- 15. that the conclusion is false
- 17. three, or more lines intersect at a common point
- 18. Property
- 19. an angle is an exterior angle of a triangle, then a measure is greater that the measure of either of its corresponding remote interior angles.
- 21. Inequality theorem
Down
- 1. by Condradiction
- 3. and Subtraction Properties
- 4. sum of the lengths of any two sides of a triangle is greater than the length of the third side
- 5. c>a and a<b, then ac<bc and a/c<b/c
- 7. point of intersection
- 8. Property
- 9. reasoning
- 11. bisector
- 12. point of the altitudes of a triangle
- 13. indirect proof in which one assumes that the statement to be proved is false
- 15. or a>b
- 16. lines
- 18. proof
- 20. assumes that the statement to be proved is false