a8pr0eccalzapatri a8pr0eccalzapatri

06-02-2017
Mathematics

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Parallelogram (x 40) and (3x)

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Alaynabon Alaynabon

09-02-2017

x-y=2y -> x=3y and
3x-40+2y=180 --> 9y-40+2y=180 --> 11y=220 --> y=20, x=60 --> <A=<C=140 degrees, <B=<D=40 degrees.

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