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dma 040

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360 degree Parallelogram, A&D have same measures, B&C have same measures. C is four time the measure of A. What is
<A
<B
<C
<D

  • dma 040 -

    Interesting. In view of the fact that the angles are usually lettered in clockwise or counter-clockwise sequence, that means that <A is opposite <C, so since <A+<D = 180, both are right angles, and the figure is a rectangle.

    If in fact <A is opposite <D, then
    A+B = 180
    x+4x = 180
    x = 36
    <A = <D = 36
    <B = <C = 144

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