Question

Pe laturile AB si AC ale triunghiului abc se considera punctele D,respectiv E,astfel incat DE//BC.Aflati AB,AC,AD,AE,AE stiind BC=31,5, DE=14, DB=7,5 EC=12,5.AM MARE NEVOE DE AJUTORRR!!!!!

Answer 1

DE║BC⇒T.f.a ΔADE asemenea ΔABC⇒ AD/AB=DE/BC=AE/AC⇒ AD/AB=14/31,5=AE/AC⇒AD=AE=14K ; AB=AC=31,5K ; AD/AB=14K/31,5K=14/31,5⇒AB=14+7,5=21,5 ; AE/AC=14K/31,5K=14/31,5⇒AC=14+12,5=26,5 ; AD=AB-BD=21,5-7,5=14; AE=26,5-12,5=14 ; Sper ca e bine!