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Mathematics 9 Online
OpenStudy (mouth4war):

If m∠ABC = 72°, what is m∠DAB? A) 72° B) 108° C) 144° D) 216°

OpenStudy (mouth4war):

OpenStudy (mathwizzard3):

I think it's A but I'm not sure how to do these so.....

OpenStudy (mouth4war):

i think its A too because it looks like its the same angle as ABC (same degrees i mean)

OpenStudy (anonymous):

That is a parallelogram. In a parallelogram, consecutive angles are supplementary.

OpenStudy (anonymous):

Do ya get it?

OpenStudy (anonymous):

Are you there?

OpenStudy (mouth4war):

oh! so then it would be 108

OpenStudy (anonymous):

Ye, that would be it.

OpenStudy (mouth4war):

would this be supplementary as well?

OpenStudy (mouth4war):

@LegendarySadist

OpenStudy (mathwizzard3):

It would be 60 because if you did the vertical angle thing they would end up both being in the spot where when they are added they equal 180.

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