25. Ni hehe byemewe kunyuranaho munzira y’icyerekezo kimwe?
26. Utegereje gukata iburyo kwiherezo ry’umuhanda.ukingirijwe nimodoka ihagaze.niki wakora?
27. Iki cyapa gisobanura iki?

28. Itara ryo guhagarara ry’ibara ritukura rigomba kugaragara igihe ijuru rikeye nibura mu ntera ikurikira:
29. Iyo umuvuduko w’ibinyabiziga bidapakiye ushobora kurenga km50 mu isaha ahategamye, bigomba kuba bifite ibikoresho by’ihoni byumvikanira mu ntera:
30. Birabujijwe kugenza ibinyabiziga bigendeshwa na moteri naza romoruki zikururwa nabyo, iyo ibiziga byambaye inziga zidahagwa cyangwa inziga zikururuka zifite umubyimba uri hasi ya cm 4. Ariko ibyo ntibikurikizwa kubinyabiziga bikurikira: