Răspunsuri

  • Utilizator Brainly
2014-09-29T14:54:27+03:00
Masurile unghiurilor se pot calcula in mai multe moduri.
 Daca <C=<A=70
<B=<D=(360-70-70):2=110

in ΔCBD,
<DCB=70 si <CDB=50=>
<CBD=180-50-70=60 =<BDA
Daca CD||AB=> <CDB=<DBA=50
=> <CBA=<CBD+<DBA=50+60=110




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