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  5. The Triangle and its Properties

7th Class Mathematics The Triangle and its Properties Question Bank Properties of Triangle

  • question_answer
    \[AB||CD\] in the figure as shown below, then \[~\angle ACD\] is equal to

    A)  \[80{}^\circ \]                          

    B)  \[40{}^\circ \]           

    C)  \[60{}^\circ \]              

    D)  \[65{}^\circ \]

    Correct Answer: C

    Solution :

    (c): \[\angle ACD+\left\{ \angle CAE+30{}^\circ  \right\}=180{}^\circ \] [internal \[\angle les\]' sum] \[\angle CAE=90{}^\circ \Rightarrow \angle ACD=180{}^\circ -90{}^\circ -30{}^\circ =60{}^\circ \]           


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