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Mathematics 16 Online
OpenStudy (anonymous):

HELP! **PROOF** I GIVE MEDALS ;) Given: a||b, a and c are perpendicular, b and d are perpendicular Prove:c||d 1) a||b, a and c are perpendicular, b and d are perpendicular------>Given

OpenStudy (anonymous):

|dw:1365534244407:dw|

OpenStudy (anonymous):

i think u use theorem 3.11-perpendicular transversal therom

OpenStudy (anonymous):

but idk how

OpenStudy (mathstudent55):

|dw:1365529349898:dw| Since lines a & b are parallel, angles 1 and 2 are coingruent bec they are corresponding angles.

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