dma 040
posted by Anonymous .
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

Interesting. In view of the fact that the angles are usually lettered in clockwise or counterclockwise 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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