Probleme
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Probleme Probleme D C 1. A B Ip. ABCD AC∩BD= O M mij. [AB] OM∩CD= C: AM||CN ABCD paralelogram ≡>AB||CD≡>AM||CN ∆AOM ≡ U.L.U. ∆CON <AOM≡<CON o.p ≡>∆AOM≡∆CON≡> AM||CN ≡>AMCN paral. AB||CD AM≡CN AC sec. ≡><OAM≡<OCN alt. Int. ≡> AM||CN 16
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Probleme
Probleme
D C
1.
A B Ip. ABCD AC∩BD= O
M mij. [AB] OM∩CD= C: AM||CN
ABCD paralelogram ≡>AB||CD≡>AM||CN
∆AOM ≡ U.L.U.∆CON <AOM≡<CON o.p ≡>∆AOM≡∆CON≡> AM||CN ≡>AMCN paral. AB||CD AM≡CN AC sec. ≡><OAM≡<OCN alt. Int.
≡> AM||CN
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Elev MATASĂ Alexandra Ioana, îndrumător Profesor RĂILEANU Dorina. Patrulatere convexe
D M C
2.
A B
Ip: ∆ADM ≡ L.L.L ∆BCM ≡ ≡>∆ADM≡∆BCM ≡ ≡><ADM≡<BCM + =1800 ≡> =900
ABCD paral.
≡>ABCD dreptunghi
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