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Renatemambouko, Alitta va roooooooooggggggg

Renatemambouko Alitta Va Roooooooooggggggg class=

Răspuns :

∡BAC=50°
∡ABC=70°
⇒ACB=180°-(50°+70°)=180°-120°=60°
MNIIBC  ⇒ ∡ANM=∡ACB=60°
BN bisectoarea ∡ABC  ⇒ ∡CBN=70°:2=35°
MNIIBC  ⇒ ∡MNB=∡CBN=35°
MNIIBC  ⇒ ∡AMN=∡ABC=70°