Răspuns :
a) tr.ABC is. => AM = h => m <BMA=90*
b)A = (h×b)/2 (formula)
=> Aabc=(AM×BC)/2 => Aabc=(8×12)/2=> Aabc=96/2=>Aabc=48 cm2
c)tr.ABCis.=> AB=AC=10
Pabc=2AB+BC=>Pabc=10×2+12=32 cm
Răspuns:
Explicație pas cu pas:......................................