Perpendikulyar (lot. perpendiculoris—shoquli), khati rostest, ki khati rosti digari hamvorii malumro tahti kunji rost meburad.
Инчунин кобед
SADUDDINI HAMMUI Muhammad ibni Juvayni
SADUDDINI HAMMUI Muhammad ibni Juvayni (soli tavallud nomalum — Vafot 1252), yake az namoyandagoni mashhuri …