In the figure, if O is the centre of the circle, then the measure of x is:

The angle subtended by the diameter of a semicircle is:

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

Which of the following is a secant?

The longest chord of a circle is:

The number of tangents that can be drawn to a circle from an external point is:

In fig., if OA = 5 cm and OM = 3 cm, the length of the chord AB (in cm) is:

 In Fig. ABC = 69°, ACB = 31°, find BDC.

If a chord and a tangent intersect externally, then the angle between them is:

In Fig.  A, B and C are three points on a circle with centre O such that BOC = 30° and AOB = 60°. If D is a point on the circle other than the arc ABC, find ADC.