DPSP and FD

In Delta DEF and Delta PQR , if PQ =DE, EF=PR and FD =QR, then

In an acute angle triangle ABC,AD,BE and CF are the altitudes,then (EF)/(a)+(FD)/(b)+(DE)/(c) is equal to -

If DeltaABC~DeltaDEF , AB=4cm, DE=6,EF=9 cm and FD=12 cm, then find the perimeter of DeltaABC .

If DeltaABC ~ DeltaDEF AB =4 cm , DE = 6 cm, EF =9 cm and FD =12 cm find the perimeter of DeltaABC .

In given figure,l abs() m and liner segments AB, CD and EF are concurrent at point P. Prove that (AE)/(BF)=(AC)/(BD)=(CE)/(FD)

It is given that DeltaABC~=DeltaFDE in which AB = 5 cm, angleB=40^(@), angleA=80^(@) and FD=5cm. Then, which of the following is true?