Parallelogram Help Please!! (1 Viewer)

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stellina91

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Find the angles a and b in the diagram, GIVING REASONS!

I am not sure what the reasons would be.

Please help me! Thanks!!
 
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independantz

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Cointerior angles.

If you want to be precise you could label the parallelogram and say something like:

a=180-53 (cointerior angles, AB//BC)
 
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