apl. t.p in tr. nmp=> np²=mn²+mp²=>np²=(rad3)²+(rad13)²=>np²=3+13=>np²=16=>np=(rad16)=>np=4
P.tr. nmp= (rad3)+(rad13)+(rad16)=(rad32)=(4rad2) cm
A.tr. nmp= [(rad3)×(rad13)] / 2= (rad39)/2 cm²
