Across
- 3. meeting at a single point
- 6. the point of intersection of the three right bisectors of the sides of a triangle
- 8. also known as a right bisector
- 10. lying on the same line
- 11. a line segment joining two points on a curve
Down
- 1. a quadrilateral with two pairs of opposite sides that are parallel
- 2. the point at which the three angle bisectors of a triangle meet
- 4. the point at which the three altitudes of a triangle meet
- 5. the point that divided the line segment into two equal segments
- 7. a measure of the steepness of a line
- 9. the set of all points in the plane that are equidistant from a fixed point called the centre
- 10. the point where the three medians of a triangle intersect
