Robert says that he can draw an obtuse equilateral triangle. Jonas says that is not possible. Who is correct and why? A.
Robert is correct as long as the other two angles are acute and all of the sides are the same length.

B.
Jonas is correct because an equilateral triangle has 3 acute angles and all sides the same length.

C.
Robert is correct because all equilateral triangles have 1 obtuse angle and all sides the same length.

D.
Jonas is correct because equilateral triangles have one right angle and two sides the same length.