Kwambuka: Wibande Heptagon Impinga
Soma: Wibande, Heptagon, Impinga.
Urugo rwerekana aho nuburyo dushobora kwerekeza imbaraga zacu, kugirango tugere kubisubizo byiza bishoboka. Vertex cyangwa Vertex yerekana aho nuburyo imbaraga zabaye mubuzima bwambere zizagaragara muri ubu buzima. Uyu mwanya utanga umusanzu mubi bibazo, ariko bike, kuko ari intege nke cyane. Ibindi