Jawabanmu

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2014-09-02T18:21:01+07:00
BD=CD

AD^2=BD.CD
=BD.BD
=BD^2
AD=BD
BD=1/2 BC ----> AD=1/2 BC
1 5 1
2014-09-02T18:25:28+07:00
BD = CD
AD^2=BD.BD
=BD^2
AD = BD
BD=1/2 BC = AD=1/2 BC