In the nearly two thousand years since Euclid, while the range of geometrical questions asked and answered inevitably expanded, the basic understanding of space remained essentially the same.
Durante preto de dous mil anos desde Euclides, mentres se ampliaba inevitabelmente o número de cuestións xeométricas propostas e resoltas, a concepción básica de espazo permaneceu en esencia inalterábel.