Ihuriro ryibiziga ni icyuma cya silindrike hamwe na centre yashyizwe kumutwe ushyigikira umwirondoro wimbere.Bizwi kandi nk'ibiziga, ibyuma byuma, ibiziga, n'inzogera.Hariho ubwoko butandukanye bwibiziga bishingiye kuri diameter, ubugari, uburyo bwo gukora, nibikoresho.
Soma byinshi