Circle and Angles, Circumference Area Arcs Chords

The angle subtended by the diameter of a semi-circle is:

• 90

• 45

• 180

• 60

In the below figure, the value of ∠ADC is:

• 60⁰

• 30⁰

• 45⁰

• 55⁰

In the figure, O is the centre of the circle and PR = QR. What is the measure of ∠PQR?

• 60⁰

• 110⁰

• 75⁰

• 45⁰

In the figure, O is the centre of the circle. What is the measure of ∠ACB?

• 45⁰

• 60⁰

• 70⁰

• 90⁰

Segment of a circle is the region between an arc and ———- of the circle.

• Radius

• Chord

• Diameter

• sector

The region between an arc and the two radii, joining the centre to the endpoints of the arc is called a ————–

• Sector

• Segment

• Arc

• Area

The sum of either pair of opposite angles of a cyclic quadrilateral is ——–

• 90⁰

• 180⁰

• 360⁰

• 60⁰

A point, whose distance from the centre of a circle is greater than its radius lies ———- of the circle.

• on circle

• in exterior

• on interior

• none of above

The length of the complete circle is called its

• Radius

• diameter

• circumference

• area

Equal chords of a circle subtend

• different angles at the centre

• no angles at the centre

• small angles at the centre

• equal angles at the centre