7th Class Mathematics Practical Geometry Question Bank Practical Geometry

  • question_answer
    The measurements of \[\Delta DEF\] are \[EF=8.4\text{ }cm,\] \[\angle E=100{}^\circ \] and \[\angle F=82{}^\circ \] Which of the following is correct?

    A)  \[\Delta \text{ }DEF\] can be constructed.         

    B)  \[\Delta \text{ }DEF\] is an obtuse angled triangle.

    C)  \[\Delta \text{ le}\] cannot be constructed     

    D)  \[\Delta \text{ }DEF\] is an acute angled triangle.

    Correct Answer: C

    Solution :

    (c): \[\Delta \,le\] cannot be constructed as sum of only two Ales \[\angle E\] & \[\angle F>180{}^\circ \] \[(\angle E+\angle F=182{}^\circ ),\]which is not possible in a \[\Delta \,le\].    


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