Any 2 angles that add up to 90 degrees because there are 180 degrees in a triangle and a right angle measures 90 degrees
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A scalene triangle could have three acute angles, one right angle and two acute angles, or one obtuse angle and two acute angles.
The word would be acute. You could refer to the triangle as an acute triangle. This means all angles measure less than 90 degrees.
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.
It could be a number of things. Isosceles triangle is most likely what you are looking for.
Only if it has a right angle and 2 acute angles