To understand and explain the various natural phenomena in the world, it is no longer enough to use whole dimensions. This work answers the question: Is there complexity to obtain a fractal dimension associated with different curves and sets? The answer has to do with the purpose of explaining the measurement of sets, specifying its theoretical and numerical estimate of the fractal dimension. As a consequence of the discussion of the concept of dimension and the characterization of objects, it is possible to conclude that there is a substantial difference between Euclidean geometry and fractal geometry, generated by new concepts such as: self-similarity, self-similarity, scale dimension, Hausdorff dimension, topological dimension and fracta...