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September 21, 2014

September 21, 2014

Posted by **jessica** on Wednesday, August 26, 2009 at 9:44am.

- geometry -
**Reiny**, Wednesday, August 26, 2009 at 9:48amAny "two consecutive" angles of a parallelogram must be supplementary.

so

4(x+5) + 2(3x+20) = 180

4x + 20 + 6x + 40 = 180

10x = 120

x = 12

so sub that back into the originals to get

68º and 112º

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