Posted by MathPerson on Tuesday, January 11, 2011 at 7:51pm.
Measure of two angles of a tringle are 28 and 58. Classify triangle by it's angle.

PreAlgebra  helper, Tuesday, January 11, 2011 at 8:07pm
An 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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