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Concursul "Al. Myller" problema 3
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Concursul "Al. Myller" problema 3
Posted:
Sun Apr 13, 2008 10:28 pm
by
Bogdan Cebere
Fie
\( ABCDE \)
un pentagon convex. Demonstraţi că
\( {\frac{aria(ABC)}{aria(ABCD)}}+{\frac{aria(CDE)}{aria(BCDE)}} <1 \)
.
Dan Ismailescu