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Mathematics 21 Online
OpenStudy (anonymous):

PLEASE HELP!

OpenStudy (anonymous):

OpenStudy (anonymous):

D: <BAD = <ADC Reason: We know <ADC = 90 degrees, so if <BAD is also 90 degrees, that means 2 angles next to each other are right angles, therefore the other angles must be 90 degrees as well. And what is a box with all angles 90 degrees and 2 sides equal to each other? A square!

OpenStudy (anonymous):

Thanks!!!

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