Răspuns :
<)A=C =120:2 =60 grade
<)B =D = (360-120 ):2 =240:2 =120 gr
=> <)ABD =ADB =60 gr =>triungh.ABD =echilateral
AB=AD=BD =8 cm
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<)B =D = (360-120 ):2 =240:2 =120 gr
=> <)ABD =ADB =60 gr =>triungh.ABD =echilateral
AB=AD=BD =8 cm
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