An arc is a semicircle when its ends are the ends of a diameter.
A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called centre. A circle is a closed two-dimensional curve shaped figure, where all the points on the surface of the circle are equidistant from the centre point.
- Diameter– A line segment having both the endpoints on the circle and is the largest chord of the circle.
- A semicircle is formed when a lining passing through the centre touches the two ends on the circle.
- A part of a circumference of the circle is known as an arc. An arc is a continuous piece of the circle.