Răspunsuri

2014-04-24T09:18:28+03:00
Cel mai inteligent răspuns!
2014-04-24T09:18:45+03:00
A = 90 grade ( unghi drept )
B = C
A + B + C = 180 grade
A + 2B = 180 grade
90 + 2B = 180 grade
2B = 90 grade
B = 45 grade
B = C = 45 grade
2 4 2