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The dihedral angle of a regular tetrahedron is 70.5 degrees.

Dihedral angle

A dihedral angle is defined as the angle between two planes. When two intersecting planes meet, it forms an angle known as dihedral angle.

A regular tetrahedron is a tetrahedron in which all four faces are equilateral triangles.

The dihedral angle of a regular tetrahedron is 70.5 degrees.

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