| A | B |
|---|
| Cicle | is a shape bounded by a continuous curved line that is always the same distance from its centre point. |
| Circumference | is the length of a circle's boundary or perimeter. |
| Diameter | is a line that passes through the centre point of a circle to the circumference at each side. |
| Radius | is a line reaching from the centre of the circle to its circumference. |
| Semicircle | is exactly half a circle. |
| Quadrant | is one quarter of a circle |
| Chord | is a line that joins two points on the circumference of a circle. |
| Sector | is a shape bounded by two radii and the arc of a circle. |
| Segment | is a shape bounded by a straight line and the arc of a circle. |
| Arc | is a part of the circumference of a circle bounded by two points. |
