One angle of an isosceles triangle measures 72°. What measures are possible for the other two angles? Choose all that apply.
Since the triangle is isosceles, it has two congruent angles. Let x be the measure of each of these angles. Then, we have:
72° + x + x = 180° (sum of angles in a triangle)
2x + 72° = 180°
2x = 108°
x = 54°
Therefore, the other two angles must each measure 54°.
So, the only measure possible for the other two angles is 54°.