It is a 3 sided triangle with different side lengths and 3 interior angles of different sizes.
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By definition, a triangle has three sides.
The definition of the word "scalene" is a triangle having three sides of different lengths.The mathematical definition of "symmetry" is an exact reflection of form on opposite sides of a dividing line/plane.Therefore, by definition, no lines of symmetry exist in a scalene triangle.
A question without any equal sides is a scalene triangle. A scalene triangle, by definition, is a triangle without any congruent sides. Of course, there are varying definitions, but they all have the same gist. Once again, a triangle without any equal sides is a scalene triangle!
A scalene triangle has 3 sides of different lengths and 3 interior acute angles that add up to 180 degrees
3 sides - such is the definition of triangle. Every triangle of any type has three sides.