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2014-09-09T17:49:57+03:00
Notezi rombul ABCD, 
AC=24√3⇒AO=12√3
BD=24⇒OB=12
ΔAOB,Th Pitagora AB²=AO²+OB²
AB²=144+144*3
AB=24⇒AB=2*OB⇒m<OAB=30⇒m<BAD=60

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