Can a scalene triangle be a obtuse triangle?

Answer 1

Yes, indeed. Imagine a scalene triangle sitting on its longest side. If you could push the pointy part on top down, it would eventually become an obtuse triangle.

Answer 2

Yes. A scalene triangle may have an obtuse angle. A scalene triangle is one in which all three sides are different lengths.

Answer 3

Yes providing that the other two angles are different acute angles

Answer 4

Yes.