If you know the lengths of the sides, you can use the cosine rule. If you have information about other aspects of the triangle, then other formulae will apply.
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No, An equilateral triangle has 3 congruent angles, an isosceles triangle has 2 congruent angles, a scalene triangle has no congruent angles.
no angles in a scalene triangle should be equal. its called a scalene triangle because none of the angles or sides ar similar or congruent.
A triangle with no equal sides or angles will always be classified as 'scalene'.
scalene triangle dose not have any equal sides or angles =)
No because a scalene triangle has no right angles