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URRRRRRRGGGGGGGGGGGEEEEEEEEEENNNNNNNNNNTTTTTTTT

URRRRRRRGGGGGGGGGGGEEEEEEEEEENNNNNNNNNNTTTTTTTT class=

Răspuns :

Completam textul : unde P∈NE si Q∈ET


Demo:
OP bisectiooare⇒EP/PN=EO/ON (teorema bisectoarei inΔNOE)
OQbisectoare⇒EQ/QT=EO/OT(teo.bisect.inΔTOE)
dar ON≡OT (ipoteza )
deci EO/OT=EO/ON, deci EP/EN=EQ/ET⇒reciproca teo thales PQ||NT, cerinta
Vezi imaginea ALBATRAN