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Math Help - Properties of 4-Sided Figures.

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    Question Properties of 4-Sided Figures.

    This is a Rhombus. Find angle E.



    SORRY ABOUT THE DRAWING. ANYWAY ITS A RHOMBUS.ALL 4 SIDES ARE EQUAL. EACH PAIR OF ANGLES BETWEEN A PARALLEL LINE ARE EQUAL TO 180''.
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    Quote Originally Posted by ProMathematics View Post
    This is a Rhombus. Find angle E.

    SORRY ABOUT THE DRAWING. ANYWAY ITS A RHOMBUS.ALL 4 SIDES ARE EQUAL. EACH PAIR OF ANGLES BETWEEN A PARALLEL LINE ARE EQUAL TO 180''.
    Note that the triangles are isosceles.
    So base angles are congruent.

    Next use the alternate interior angle theorem.
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