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In triunghiul ABC , M apartine Ab si N apartine Ac . MN | | BC . Daca AB=12 , BC=18 , AC=20 , AN=5 .aflati AM,BM,CN,MN .

Răspuns :

CN = AC-AN
CN =20-5
CN = 15cm
AM+MB=12
6+6=12
AM=MB=6cm
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