Across
- 6. two lines have one common point
- 8. simple closed curve made up of line segments
- 10. curve which is closed
Down
- 1. four sided polygon
- 2. curve which is open
- 3. lines which do not meet
- 4. distance around the circle
- 5. region of circle enclosed by an arc and a chord
- 7. line segment joining any two points of the circle
- 9. region of circle enclosed by an arc and pair of radii