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in triunghiul abc masura unghiuli a =90 de grade ad_|_ bc ad=12 bd=9 aflati cd,bc,ab,ac

Răspuns :

teorema inaltimii
AD=√(BD×DC)
12=√(9×DC)
144=9×DC
DC=144/9=16 cm
BC=9+16=25 cm
teorema catetei
AB=
√(BD×BC)
AB=√(9×25)=3×5=15 cm
AC=√(DC×BC)
AC=√(16×25)=4×5=20 cm
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