Question

∆ABC isoscel,AB=AC,AD perpendicular pe BC, D apartine lui BC,AB=5cm,BD=4cm. P=?

Answer 1

BC =2BD =2*4 =8 cm

AB=AC=5 cm

P =2*5 +8 =18 cm

Answer 2

In ∆ABC ->isoscel , AD⊥BC=>AD-> inaltime, bisectoare,mediana,mediatoare=>BC=2BD=4*2=8 cm

P=AB+AC+BC=5+5+8=18 cm