Timothy draws three isosceles triangles. In each figure, he measures a pair of angles.
What is a reasonable conjecture for Timothy to make by recognizing a pattern and using inductive reasoning?
In an isosceles triangle, two of the angles are congruent.
In an isosceles triangle, one angle is always obtuse.
In an isosceles triangle, all of the angles are congruent.
In an isosceles triangle, two of the angles are obtuse.