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September 23, 2014

September 23, 2014

Posted by **shylaja** on Wednesday, June 13, 2012 at 2:59am.

- maths -
**Steve**, Wednesday, June 13, 2012 at 11:04amangles of a 6-gon add to (6-2)*180 = 720

so, the missing angle is 720 - (60+120+70+130+80) = 260

Hmmm? That's an unusual angle, indicating a non-convex polygon. Is there something missing here?

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