3 ms·
To be fair, the term they are using is "Euclidean structure," which, strictly speaking, is more algebraic than (purely) geometric. The notion of the "angle" (an
by Koshkin 5y ago
To be fair, the term they are using is "Euclidean structure," which, strictly speaking, is more algebraic than (purely) geometric. The notion of the "angle" (and from there that of parallelism) logically follows from it.