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    Question

    In the given figure ABCD is a rhombus, the value of x

    is.
    A 40° Correct Answer Incorrect Answer
    B 50° Correct Answer Incorrect Answer
    C 90° Correct Answer Incorrect Answer
    D 60° Correct Answer Incorrect Answer

    Solution

    ∠CAB=40 and  ∠BDC=x ∠D=2× ∠BDC=2x ∠A=2× ∠CAB=2×40=80 ATQ- ∠A+ ∠D=180 ° 80 ° +2x=180 ° x ° =100/2=50 °

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