In Figure 5, two concentric circles are drawn with centre O. PQ and RS are two chords of the larger circle which are tangents to the smaller circle. Prove that PQ = RS.

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Number of Tangents from External Point to Circle, Theorem on Equal Length of Tangents from External Point | PadhAiPro

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TextNumber of Tangents from External Point to CircleTheorem on Equal Length of Tangents from External PointCBSE PYQ

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Prove that the parallelogram circumscribing a circle is a rhombus.

Prove that a rectangle circumscribing a circle is a square.

In the given figure, △ ABC circumscribes a circle. If AR = 3 cm, BP = 4 cm and QC = 5 cm, find the perimeter of △ ABC.

How many tangents can be drawn from the point P on the outer circle to the inner circle in the given figure ?

In the given figure, TP and TQ are two tangents. If ∠ PTQ = 50°, then find the measure of ∠ OPQ.

PQ and PR are tangents to the circle of radius 3 cm and centre O. If length of each tangent is 4 cm, then perimeter of △ OQP is :