Across
- 1. A line segment whose end points lie on the circle
- 2. half of a circle
- 6. angled triangle A triangle in which every angle is an acute angle
- 7. circles with the same centre
- 9. The points which lie on the same straight line
- 11. The longest chord of a circle
Down
- 1. The perimeter of a circle
- 3. A triangle whose all sides are equal
- 4. A smooth flat surface which extends endlessly in all the directions
- 5. A closed figure bounded by three line segments
- 8. The line which lie on the same plane and do not intersect
- 10. The common end point of the angle