+284 Guillermo draws three isosceles triangles. In each figure, he measures a pair of angles, as shown.
Which conjecture is reasonable for Guillermo to make?
In an isosceles triangle, two of the angles are congruent.
In an isosceles triangle, all of the angles are congruent.
In an isosceles triangle, two of the angles are obtuse.
In an isosceles triangle, exactly one angle is always acute.
