Răspuns:
Explicație pas cu pas:
ex 2
a)∡BOC=∡AOD=48° opuse la varf
∡AOC=180°-∡BOC=132° suplementare
∡AOC=∡BOD=132° opuse la varf
b)∡MOP=180°-∡PON=180°-125°37'=179°60'-125°37'=54°23'
∡MOP=∡NOR=54°23' opuse la varf
∡PON=∡|ROM=125°37' opuse la varf
c)∡DOF=∡GOE=(180°-60°)/2=120°/2=60°
∡DOF=∡GOE=∡GOD=∡FOHFOH=180 =60°
∡GOE=∡FOH opuse la varf
∡HOE=180°-∡FOH=180°-60°=120°
d)∡MON=∡LOK=35° opuse la varf
∡MOL=∡NOK=180°-∡MON=180°-35°=145°
