equilateral triangle, acute triangle, some isosceles and scalene triangles
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If all of the 3 acute angles are 60 degrees then it is an equilateral triangle if not then it could be a scalene triangle.
An acute triangle.
No. By definition, an acute triangle is a triangle where all three angles are <90 degrees. Therefore, an equilateral triangle, where all the angles are 60 degrees would qualify as an acute triangle.
It is called Acute triangleIn an acute triangle, all angle are less than 90 degrees, so all angles are acute angles.
In any right triangle, the two angles at either end of the hypotenuse are both always acute angles. But I don't think that would be called an 'acute' triangle, because an acute triangle is one in which all three angles are acute ones.