Question

Va rog ajutatima urgent ex.2 Dau Coroana

Answer 1

a)
AB=3/5 × MN
AC=0,6MB=6/10×MB=3/5×MB
BC=60%NP=60/100×NP=3/5×NP       
⇒ΔABC asemenea cu ΔMNP

b)
m(∡A)=0,(6)×90°=6/9×90°=60°
m(∡B)=70°    ⇒ m(∡C)=180°-60°-70°=50°
m(∡P)=80°
m(∡M)=0,(3)×180°=3/9×180°=60°      ⇒m(∡N)=180°-60°-80°=40°
⇒ΔABC nu e asemenea cu ΔMNP

c)
m(∡N)=m(∡B)
AB/2=MN/3          AB/MN=2/3
BC/10=NP/15     BC/NP=10/15=2/3
⇒ΔABC asemenea cu ΔMNP

d)AB/MN=6/3=2
AC/MP=10/2=5
BC/NP=8/5=1,6
⇒ΔABC nu este asemenea cu ΔMNP

e)AB/MN=5/2,5=2
AC/MP=6,2/3,1=2
BC/NP=8/4=2
⇒ΔABC asemenea cu ΔMNP