Two chords PQ and QR are equildistant form `O` the centre of the circle. If QS, is the diameter, then show that QS bisects `angle PQR` and `anglePSR`.

PQ and RQ are chords of a circle equidistant from the centre. Prove that the diameter passing through Q bisects anglePQR

PQ and RQ are chords of a circle equidistant from the centre. Prove that the diameter passing through Q bisects ∠PQR and ∠PSR

PQ and RQ are chords of a circle equidistant from the centre.Prove that the diameter passing through Q visects /_PQR and /_PSR

PQ is tangent drawn from point P to a circle with centre O and QR is a diameter of the circle, such that anglePOR=120^(@) . Then, angleOPQ=…….. .

PQ is a diameter of a circle with centre O. RS is a chord parallel to PQ that subtends an angle of 40^(@) at the centre of the cirle. If PR and QS are produced to meet at T, Then what will be the measure (in degrees) of /_PTQ ?

Show that if two chords of a circle bisect one another they must be diameters.

Show that if two chords of a circle bisect one another they must be diameters.

In two concentric circles with centre O.PQ is the diameter of outer circle and QS is the tangent line to the inner circle touching it in R and outer circle is S.Find the length of PR,if radii of two circles are 13cm and 8cm.