The mawerengedwe a m'dera la dziko la kusakhazikika mawonekedwe
Nenani miyeso mu mamita
A B,
B C,
C D,
D A - Kukula kwake chipani malo
U - Ili pomwe ngodya
The mawerengedwe pulogalamu adzaona dziko dera, osadziwika kumathandiza kupeza ngodya zabwino ndi miyeso ya diagonals.