Qeexid
(xis.) Laanta xisaabta ee ku saabsan furfurista saddex-xagallada iyada oo la adeegsanaayo fansaarro tirignometiyeed. Waxa ay qiime aad waxtar leh u leedahay maadooyinka sida: injineeriya, nakhsha daynta, sahminta badmaax, cilmifalag iwm, waxaa loo qaybiyaa laba qaybood oo kala ah: tirignometeriga sallaxa oo ku saabsan saddex xagallo sallaxaha iyo tirignome-tiriga kubbadeed oo ku saabsan saddex-xagallo kubbadeed. Fansaarrada tirigo-nometeriyeed waxaay kaalin muhiim ah ka qaataan saafidda waxaana loo adeegsadaa in lagu muujiyo birar iyo finoomino.