Answer:
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Definition: 2 Marks
Properties: 2 Marks
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A radius is a line segment that connects the centre to a point on the circle.
The diameter is a straight line which starts at one point of the circle, goes through the centreand ends on the other point.
A chord of acircleis a straight line segment whose endpoints both lie on the circle.
Following are the properties of chords of a circle:
1. Chords are equidistant from the centre only if their lengths are equal.
2. A chord that passes through the centre of a circle is called a diameter, and it is the longest chord.