Question

Ex 8 urgenttttttt du COROANA

Answer 1

Răspuns:

<AOB=42°

<BOC=84°

<COD=126°

<AOD=108°

Explicație pas cu pas:

<AOB+<BOC+<COD+<AOD=360°

<AOD=108°=><AOB+<BOC+<COD=252° (360-108=252)

<BOC=2<AOB=><AOB+2<AOB+<COD=252°

3<AOB+<COD=252°

<COD=<COA=252:2=126=><COD=126°

3<AOB+126=252

3<AOB=252-126

3<AOB=126°

<AOB=126:3

<AOB=42°

<BOC=2AOB

<BOC=2x42

<BOC=84°

Verificare: 42°+84°+126°+108°=360°

(Daca faceti si desenul, veti face mai usor rezolvarea. Mult succes!)