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Se considera triunghiul ABC si punctele M€ AB , N€ AC astfel incat MN|| BC .Aflati lungimile segmentelor AN si NC stiind ca MN=2 cm BC= 10 cm si AC = 20cm

Răspuns :

MN|| BC⇒ΔAMNasemeniΔABC⇒[tex] \frac{AM}{AB} [/tex]=[tex] \frac{AN}{AC} [/tex]=[tex] \frac{MN}{BC} [/tex]⇒[tex] \frac{AN}{20} [/tex]=[tex] \frac{2}{10} [/tex]⇒AN=4⇒NC=20-4=16