Across
- 2. when 3 or more lines intersect at a common point
- 3. temporarily assuming the proof is false
- 7. when the bisector is also perpendicular to the segment
- 10. where concurrent lines intersect
- 11. point of concurrency of the medians of a triangle
- 12. segment from a vertex to the line containing the opposite side
Down
- 1. another word for indirect proof
- 4. point of concurrency of the perpendicular bisectors
- 5. angle bisectors points on concurrency
- 6. segment with endpoints being a vertex of a triangle and midpoint
- 8. assuming something and then leading to a contradiction
- 9. altitudes of a triangle are concurrent and intersecting this point