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If angle ABC = 142^(@) , find reflex ...

If `angle ABC = 142^(@) ` , find reflex ` angleABC`.

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In the adjoining figure, AOB is the diameter and O is the centre of the circle. If angle BDC=60^@ , then find the value of angleABC .

What is a reflex angle?

Knowledge Check

  • In the given figure, O is the centre of the circle. ABD is a straight line and angle CBD = 65^(@) . Find reflex angle AOC (marked x^(@) ).

    A
    `130^(@)`
    B
    `230^(@)`
    C
    `190^(@)`
    D
    `65^(@)`

  • If O is the incentre of a triangle ABC and angle AOC=124^@ , find the angle ABC .

    A
    56
    B
    112
    C
    68
    D
    can't be determined

  • A reflex angle measures

    A
    more than `180^(@)` but less than `270^(@)`
    B
    more than `180^(@)` but less than `360^(@)`
    C
    more than `90^(@)` but less than `180^(@)`
    D
    none of these

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    In Delta ABC, AC = BC and angle BAC = 50^(@) . " Find " angle BCA

    In the adjoining figure angleBAD = a, angleABC = b and angleBCD = c and angle ADC = d , find the value of angle ABC in terms of a, c and d:

    In the given is the centre of circle, PQ is a tangent to the circle at A. If angle BAQ=60^(@) then find angle ABC and angle APB.

    In a triagle Delta ABC, the angle bisectors of angle ABC and angle ACB meet at point D and angle angle BDC is 135^@ . Find the value of angle BAC .

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