関連ワード:  can an obtuse angle triangle be an isosceles triangle    can an acute angle triangle be an isosceles triangle    an obtuse angle triangle can be an isosceles triangle true or false    can an isosceles triangle also be an obtuse angle triangle    an isosceles triangle can be an obtuse angle triangle also true or false    can an isosceles triangle have an obtuse angle    can a right triangle be an isosceles triangle  
結果 : can an obtuse angle triangle be an isosceles triangle