Kuverenga kwenzvimbo yenyika yechimiro chisina kurongeka
Ndapota kombidze hukuru mumamita
A B,
B C,
C D,
D A - hukuru hwemativi echikamu .
U - ndau yekona yakarurama
Semugumisiro wekuverenga, purogiramu inozosarudza nzvimbo yesaiti, makona asingazivikanwi uye hukuru hwe diagonal.