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April 21, 2015

April 21, 2015

Posted by **Clarissa** on Wednesday, January 5, 2011 at 1:14am.

- Geometry -
**drwls**, Wednesday, January 5, 2011 at 3:12amEach INTERNAL angle of a regular octagon is 135 degrees.

If 4x + 12 = 135, then

4x = 123

Divide both sides of the equation by 4.

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