An equilateral triangle has 3 equal angles of 60 degrees that all add up to 180 degrees
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60 degrees for an equilateral triangle, but it depends on what kind of triangle you're dealing with.
60 degrees: acute
The last angle would have to be 60 degrees as well. Since there are 180 degrees in a triangle, 60+60=120 and 180-120=60, it has to be 60 degrees.
In a triangle, if all of the angles are 60 degrees, then all three sides of the triangle are equal to each other. Basically, if the angles are equal than the sides must be equal. This kind of triangle is called an equilateral triangle.
If a triangle has equal sides, it will have equal angles of 60 degrees. It is called an equilateral triangle.