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In triunghiul ABC, DE || AC ; BE=6cm ; EC= 8cm ; D apartine AB ; E apartine BC. Aflati AD/AB.


Răspuns :

Munmncask
DE//AC⇒[tex] \frac{BD}{BA} = \frac{BE}{BC} [/tex]
[tex] \frac{BE}{BC} = \frac{6}{6+8} = \frac{6}{14} = \frac{3}{7} =K[/tex]
[tex] \frac{AD}{AB} = \frac{EC}{CB} = \frac{8}{14} = \frac{4}{7} [/tex]
[tex] \frac{AD}{AB} = \frac{4}{7} [/tex]