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A,B, C colineare M,mijlocul sg AB si N, mijlocul AC. Calculati;AB, BC, BM, BN
MN=5cm, AC=14 cm


Răspuns :

AN=NC; NC=14/2=7; BN=MN/2=5/2=2,5; BC=2,5+7=9,5; AB=14-9,5=3,5; BN=BM; BM=2,5;