Across
- 3. the point at which they intersect
- 7. when three or more lines intersect in one point
- 8. a segment whose endpoints are a vertex and the midpoint of the opposite side
- 9. the perpendicular segment from a vertex to the line containing the opposite side
- 10. the point of concurrency of the medians
Down
- 1. a segment connecting the midpoints of two sides
- 2. the point of concurrency of the angle bisectors
- 4. the point of concurrency of the altitudes
- 5. a proof involving coordinate geometry and algebra
- 6. the point of concurrency of the perpendicular bisectors