Yes. The angle that is not the same can be 140 degrees. Because the other two angles are equal, then they would both be 20 degrees.
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A 140 degree angle is about half way between a 90 degree angle, which has lines that are perpendicular to each other, and a 180 degree angle, which is a straight line. A 140 degree angle is an obtuse angle which has a line a little over half way between the 90 degree and 180 degree angles.
A 140 degree angle would be called an obtuse angle.
140 degrees
No angle can be complementary to a 140 degree angle, as the sum of complementary angles is 90 degrees. But angles which are supplementary to each other add together to form a 180 degree angle.
The internal angles of a triangle add up to 180 degrees. 80 + 60 = 140 140 + x = 180 (x= the unknown angle) x = 180-140 x = 40 The unknown angle is 40 degrees