Isibuko esingemuva akusona isibuko esiyisicaba, kodwa isibuko esiyi-convex.Indawo yokubuka isibuko esingemuva incike ezintweni ezintathu: ibanga eliphakathi kwamehlo omshayeli nesibuko esibonisa ngemuva, ubukhulu besibuko esibonisa ngemuva, kanye ne-curvature radius yesibuko esibonisa ngemuva.Izinto ezimbili zokuqala zigxilile noma azilawuleki, futhi umphumela wokubonisa othinta kakhulu ukugoba kwesibuko esibuka ngemuva.I-radius encane ye-curvature yendawo yesibuko, inkulu inkambu yokubuka, kodwa ngesikhathi esifanayo, izinga lokuguquguquka kwento ebonisiwe likhulu, futhi likude nebanga langempela, elingabangela kalula inkohliso yomshayeli.Ngakho-ke, i-curvature radius yendawo yesibuko inomkhawulo webanga elicaciswe amazinga omkhakha.Iphinde ibalule ukuthi indawo lapho isibuko esiveza khona ngemuva ingaphandle akumele sibe ngaphezu kuka-250mm wemoto.
