A bijection between generic marked projective tetrahedra and rational elliptic surfaces with two I2 fibers (D6-surfaces) identifies edge lengths and dihedral angles with period maps.
The R egge symmetry, confocal conics, and the S chl\" a fli formula
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Rational Elliptic Surfaces and the Trigonometry of Tetrahedra
A bijection between generic marked projective tetrahedra and rational elliptic surfaces with two I2 fibers (D6-surfaces) identifies edge lengths and dihedral angles with period maps.