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Rezolvati problema 3

Rezolvati Problema 3 class=

Răspuns :

Comparam ∆ACB cu ∆ACD
[AB] ≡ [AD]
[AC] ≡ [AC]
C ≡ C
==> (L.U.L) ∆ACB ≡ ∆ACD
Deci CB ≡ CD.