Each exterior angle measures 120 degrees
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equiangular triangle
Yes because the only way a triangle can be equiangular is if every angle is 60 degrees
Measure it. There is no formula for an exterior angle unless you have a regular (or equiangular) polygon. And there is no evidence to suggest that that is the case.
No there is not. A right triangle has to have an angle of 90 degrees. An equiangular triangle has 3 equal angles. If a right triangle was equiangular, it would be 90 times 3 equaling 270 degrees. There are only 180 degrees in a triangle.
It is: 180-interior angle = exterior angle