An angle of 60 degrees is an acute angle because it is greater than 0 but less than 90 degrees.
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It is a right angle triangle and the 3rd angle will measure 30 degrees
If you mean an equilateral triangle then the 3rd angle is 60 degrees
It is a right angle triangle providing that the 3rd angle is 30 degrees.
Exterior angles are acute because each angle measures 60 degrees Interior angles are obtuse because each angle measures 120 degrees
If it's a right angle triangle then the the third angle is 60 degrees.