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In the figure, which circles are congrue...

In the figure, which circles are congruent to the circle A?

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What are congruent circles?

In the given figure, O is the centre of the circle and AD is a tangent to the circle at A. If |__CAD=50^(@) and |__ADC=30^(@) , find |__ABO .

Knowledge Check

  • In the given figure ,APB is tangent of the circle at the point P on the circle.PQ is a chord .If angleBPQ=62^(@) ,then anglePQR is equal to :

    A
    `28^(@)`
    B
    `118^(@)`
    C
    `124^(@)`
    D
    `62^(@)`

  • Radii of twi concentre circles 8 cm a and 10 cm respectively.The length of the greatest chord which is tangent to the inner circle is:

    A
    6cm
    B
    8cm
    C
    12xm
    D
    20cm

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    In the figure, PQL and PRM are tangents to the circle with centre O at the points Q and R respectively and S is a point on the circle such that |__SQL=50^(@) and |__SRM=60^(@) . Find |__QSR .

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