Nkebi ahịrịokwu nke 1: Mgbe elu nwere nkwụsịtụ nkwụsịtụ na-emepe emepe, mgbe ahụ ọ bụ elu Euclidean na geometry nke elu bụ geometry Gaussian. Nkebi ahịrịokwu nke abụọ: Ọ bụrụ na elu nwere nkwụsịtụ Gaussian nke efu, ọ bụ elu nwere ike ịmepụta na geometry nke elu bụ geometry Euclidean. Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
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