Răspuns:
AB=√(9-12)²+(12-16)²
AB=√9+16
AB=√25
AB=5
AC=√(8-12)²+(13-16)²
AC=√16+9
AC=5
BC=√(8-9)²+(13-12)²
BC=√1+1
BC=√2
In ΔABC,AB=AC⇒ΔABC este isoscel
In ΔABC,AB²+AC²=BC²⇒R.T.P.⇒25+25=2 ... (F)
Aria ΔABC=2*h/2
Aria = h
In ΔABC,AB=AC,ducem h-AM⇒AM mediana⇒BM=MC=1
In ΔABM,m(∡B)=90°⇒AB²=AM²+BM²
AM²=25-1
AM²=24⇒AM=√24,AM=2√6
Aria ΔABC=2√6
Spre ca te-am ajutat!!Succes!!Coroana??
