Once again the answer from The WikiAnswers Community is wrong. The triangle is an obtuse angled isosceles triangle. And, as inanimate objects, triangles are not usually prone to become pregnant!
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Each base angle is 62.5 degrees
The 3rd angle is: 180-55-80 = 45 degrees
An angle of 170 degrees is an obtuse angle.
It is an angle whose measure is 310/360 =31/36 of a full rotation.
Complementary angles.