No. Angles don't have anything called a side length. However, one can use trigonometry to compute the angles of a triangle based on the side lengths of the triangle (triangles do have side lengths).
Because all side lengths are different, it must be a scalene triangle.
Only two equal side lengths
Yes and the given lengths would form an isosceles triangle.
that's an iscoceles triangle...
You can list them in any order. There is no standard.
That depends on what the side lengths are. Until the side lengths are known, the triangle can only be classified as a triangle.
If its a right angle triangle then its side lengths could be 3, 4 and 5
No. Angles don't have anything called a side length. However, one can use trigonometry to compute the angles of a triangle based on the side lengths of the triangle (triangles do have side lengths).
An isoceles triangle! It has two lengths the same!
Because all side lengths are different, it must be a scalene triangle.
A scalene triangle which has different side lengths
That number is called the "perimeter" of the triangle.
Only two equal side lengths
A scalene triangle
If you mean side lengths of 5, 4 and 1 then it is not possible to construct any triangle from the given dimensions.
A triangle with no equal side lengths is a scalene triangle.