An equilateral triangle has three acute angles. Since all sides of an equilateral triangle are equal, all internal angles are also equal. The total sum of angles in any triangle is always 180 degrees. Therefore, if we divide 180 degrees by 3 (the number of angles in the triangle), each angle measures 60 degrees. Since 60 degrees is less than 90 degrees, each angle in an equilateral triangle is considered acute.
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