Problema 14 va rog (teorema catetei capitolul)

teorema inaltimii
AD^2 = BD x DC
DB=9DC/16
12^2 = (9DC^2)/16
DC = 16
DB = 9
BC = 25
teorema catetei
AB^2 = BDxBC, AB=15
AC^2 = DCxBC, AC=20
P=25+15+20=60