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def definition def or abbrev

cube_dihedral

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formal statement (Lean)

 105def cube_dihedral : DihedralAngleData :=

proof body

Definition body.

 106  { cosine := 0
 107  , cosine_lb := by norm_num
 108  , cosine_ub := by norm_num
 109  }
 110
 111/-- The cube dihedral is `π / 2` exactly. -/

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