Mau Oyambirira: M'dziko laukadaulo ndi ntchito zolondola, fayilo ya Triangular imatuluka ngati chida chosinthira chomwe chimapangidwira kumasuliranso luso la kuumba, kusalaza, ndi kuyenga zida zosiyanasiyana.Chida ichi chapangidwa mwaluso kwambiri kuti chipatse ogwiritsa ntchito kulondola kosayerekezeka ndi kuwongolera panthawi yantchito zawo, zomwe zimapangitsa kuti zikhale zofunika kwambiri kuwonjezera pa zida za katswiri aliyense.