Circles class 9

Chords at the same distance are of _______ length

• Different

• Twice

• Same

• Thrice

The longest chord of a circle is called ______

• Diameter

• Long chord

• Radius

• Tangent

If AB and CD are chords of a circle with center O and the values are given in the figure. What is the length of CD?

• 2 cm

• 5 cm

• 4 cm

• 6 cm

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

In the figure, if O is the centre of a circle, then the measure of ∠ACB is:

• 80⁰

• 100⁰

• 40⁰

• 60⁰

If the sum of a pair of opposite angles of a quadrilateral is ______, the quadrilateral is cyclic

• 180 degree

• 90 degree

• 360 degree

• none of these

Find the length of a chord, which is at a distance of 24 cm from the centre of a circle whose diameter is 50 cm.

• 12 cm

• 14 cm

• 16 cm

• 15 cm

In circle P, find the measure of angle QPR.

• A
• B
• C
• D