 Luka angle oyo epesami mipanzi mibale ya triangle.
 Likambo ya mawa, nakoki te koyeba angle oyo epesami kaka mipanzi mibale ya triangle. Mpo na koyeba angle, tolingaki kozala na mposa ya makambo mosusu, na ndakisa bolai ya ngámbo ya misato to motuya ya moko na ngámbo mosusu.