Multiple Choice Questions on If an exterior angle of a cyclic quadrilateral be 50 deg then the interior opposite angles is ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

If an exterior angle of a cyclic quadrilateral be 50 deg then the interior opposite angles is ........

Quantitative Aptitude ( CCS) Geometry
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    If an exterior angle of a cyclic quadrilateral be 50°, then the interior opposite angles is :

    130°

    Incorrect Answer

    40°

    Incorrect Answer

    50°

    Correct Answer

    90°

    Incorrect Answer
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    Explanation:

    ∠ABC + ∠ADC = 180°]
    ∠CBE = 50°
    ∴  ∠ABC = 180° – ∠CBE = 180° – 50° = 130°
    ∴  ∠ADC = 180° – ∠ABC = 180° – 130° = 50°

    By: Amit Kumar
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