関連ワード:  base angles in an isosceles triangle are equal    base angles of an isosceles triangle are equal proof    base angles of an isosceles triangle are equal in measure    the base angles of an isosceles triangle are equal true or false    base angles of an isosceles triangle are congruent    base angles of an isosceles triangle are congruent proof    base angles of an isosceles triangle are congruent true or false    prove that base angles of an isosceles triangle are equal    in an isosceles triangle the base angles are equal and the vertex    in an isosceles triangle the base angles are equal the vertex is 40  
結果 : base angles in an isosceles triangle are equal