Fill in the blanks.

In the circle with centre O shown alongside,

(1) Seg OD is a ………… .

(2) Seg AB is a ………… .

(3) SEg PQ is a ……….. .

(4) The length of seg AB is …………. that of se OD.

Given: O is a centre of a circle.

Firstly, we need to know what is radius, diameter, chord?

Radius: Any line segment connecting the centre of a circle to any point of a circle.

Chord: A line segment joining any two points of a circle.

Diameter: The chord of a circle which passes through the centre of the circle.

This means, diameter is the longest chord of a circle.

Also, diameter of a circle = 2 r, where r = radius

From the definition defined above and by the given figure in question we can answer the given question

(1) Seg OD is a radius

(2) Seg AB is a diameter

(3) SEg PQ is a chord

(4) The length of seg AB is twice that of seg OD.

Explanation: seg OD is a radius and seg AB is a diameter and we have seen above that diameter is twice of radius.