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OpenStudy (theoneandonly):
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TheSmartOne (thesmartone):
properties of a parallelogram: opposite angles are congruent consecutive angles are supplementary But, what is the sum of all the angles in a quadrilateral?
OpenStudy (theoneandonly):
I think its 360
TheSmartOne (thesmartone):
that's correct so |dw:1471334362104:dw| so what is the sum of angle A, B, C, and D?
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