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2014-01-16T15:47:28+02:00
AC=BD=10radical2 cm
AC intersectat cu BD = {O}
AO=OC=BO=OD=5radical2 cm
dist(D, AC)= dist( prD, AC)= OD
dist(C,AD)=CD=10 cm
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2014-01-16T17:22:22+02:00
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