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August 20, 2014

August 20, 2014

Posted by **MathPerson** on Tuesday, January 11, 2011 at 7:51pm.

- Pre-Algebra -
**helper**, Tuesday, January 11, 2011 at 8:07pmAn acute triangle has all acute angles (less than 90 degrees)

An obtuse triangle has one obtuse angle, more than 90 deg. and less than 180 deg

28 + 58 = 86

180 - 86 = 94

therefore, this is an obtuse triangle

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