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by DragosD
Wed May 21, 2008 11:07 am
Forum: Geometrie
Topic: Concurenta
Replies: 1
Views: 425

Scriem vectorul: $\vec{\omega_A\omega_B}=\vec{O\omega_B}+\vec{\omega_A O}$ , dar stiind ca centrul cercului lui Euler se afla la jumatatea distantei dintre O si H, atunci avem relatia lui Sylvester: $\vec{\omega_A\omega_B}=\frac{\vec{OA}+\vec{OC}+\vec{OD}}{2}+\frac{\vec{CO}+\vec{DO}+\vec{BO}}{2}=\fr...

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