Nkebi ahịrịokwu 1: Enwere ohere ndị a maka ọtụtụ symmetries nwere discrete symmetry axes site na otu isi: Nkebi ahịrịokwu nke 2: Maka ọtụtụ symmetry na discrete symmetry axes site na otu isi, e nwere ndị na-esonụ ohere: Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
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