関連ワード:  an obtuse triangle has one obtuse angle true or false    an equilateral triangle has one obtuse angle true or false    a right angled triangle has one obtuse angle true or false    an obtuse angle triangle has one obtuse angle and two acute angles true or false    an) obtuse triangle has at least one obtuse angle. true false    an obtuse angle triangle can have more than one obtuse angle true or false    a triangle have more than one obtuse angle true or false    a triangle can have only one obtuse angle true or false    which angles are obtuse    is an obtuse triangle  
結果 : an obtuse triangle has one obtuse angle true or false