Respuesta :

An equilateral triangle must have all three angles equal to 60 degrees. 
60 + 60 + 60 = 180

So it cannot be acute.
bellbell252
It is not possible. An obtuse angle must be between 90° and 180°. An equilateral triangle must have three 60° angles. Please note that 60° is less than 90° meaning that the interior angles of an equilateral triangle cannot be an obtuse angle. An equilateral triangle cannot be an obtuse triangle.