ANY AND EVERY plane triangle totals 180o. Spherical triangles are far too complicated for this site.
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The sum of the interior angles of any triangle, including and equilateral triangle, is 180 degrees.
The sum of any triangle (including an equilateral one) is 180 degrees.
The sum of the 3 exterior angles of an equilateral triangle add up 360 degrees
60° The angles of a triangle sum to 180°. In an equilateral triangle the three angles are all the same. Thus each angle of an equilateral triangle is 180° ÷ 3 = 60°
in a regular (equilateral) triangle, all angles are 60 degrees, to add up to 180