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Measure of two angles of a tringle are 28 and 58. Classify triangle by it's angle.

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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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