Abayobozi b'amahirwe berekana aho amahirwe azagaragarira muri ubu buzima. Vertex cyangwa Vertex yerekana aho nuburyo imbaraga zabaye mubuzima bwambere zizagaragara muri ubu buzima. Muri ibyo bibazo urakora kandi ugahora uhindura ibintu neza hamwe nubutsinzi. Ibindi