Conc.interj."Pitagora"2010 P.colectiva Subiect III

Moderators: Bogdan Posa, Laurian Filip

Post Reply
User avatar
Andi Brojbeanu
Bernoulli
Posts: 294
Joined: Sun Mar 22, 2009 6:31 pm
Location: Targoviste (Dambovita)

Conc.interj."Pitagora"2010 P.colectiva Subiect III

Post by Andi Brojbeanu »

Fie punctele \( A, B, C, D, O \) in spatiu astfel incat \( AB\perp CD, AD\perp BC \) si \( OA\perp BD \). Daca \( M \) este proiectia punctului \( C \) pe \( BD \), aratati ca punctele \( A, O, C \) si \( M \) sunt coplanare.
Prof. Dan Nedeianu, Drobeta Turnu-Severin
Brojbeanu Andi Gabriel, clasa IX-a
Colegiul National "Constantin Carabella" Targoviste
Top
Post Reply

Return to “Clasa a VIII-a”