Question: The below figure shows a rectangular prism ABCDEFGH, with lengths: CD = 8, DH = 5, and EH = 6. Triangles ABC and AFC form

The below figure shows a rectangular prism ABCDEFGH, with lengths: CD = 8, DH = 5, and EH = 6. Triangles ABC and AFC form a dihedral angle.

 calculate the size of this dihedral angle. To the nearest tenth of a degree,
F B G C E A H D 

F B G C E A H D

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