Alex drew the triangles shown. Which of the following correctly describes the triangles?

2 triangles are shown. Each triangle has sides of different lengths. Each triangle has 1 obtuse angle and 2 acute angles.

A.
Both triangles are isosceles.

B.
Only one triangle has a right angle.

C.
Only one triangle has an acute angle.

D.
Both triangles have an obtuse angle.

D. Both triangles have an obtuse angle.