Ajutor la ex 5 (dau coroana)
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Răspuns:
Explicație pas cu pas:
∡AOE=15° ∡COB=45°
a)
∠EOD==∡BOC=45°
b)∡AOB=180°-(∡AOE+∡BOC)=180°-(45°+15°)=180°-60°=120°
c)∡AOD=∡EOD+∡AOE=45°+15°=60°
d)∡COD=∡COF+∡FOD=∡AOE+∡AOB=15°+60°=75°