関連ワード:  an obtuse triangle has only one obtuse angle    an obtuse triangle may have only one obtuse angle    can an obtuse triangle have more than one obtuse angle    does an obtuse triangle have more than one obtuse angle    does an obtuse triangle only have one obtuse angle    an obtuse angle triangle can have more than one obtuse angle true or false    a triangle with only one obtuse angle    which angles are obtuse  
結果 : an obtuse triangle has only one obtuse angle