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September 23, 2014

September 23, 2014

Posted by **anu** on Thursday, January 12, 2012 at 7:43pm.

- geometry -
**Steve**, Friday, January 13, 2012 at 10:19amassuming the vertices are labeled in order, DB is a diagonal.

Since angle ADC is just angle D, and since consecutive angles of a parallelogram are supplementary, then angle A & angle D add to 180. It doesn't matter what angle ADB is.

If the figure is arranged differently, please clarify.

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