Answer:
schläfli symbol {50}, t{25}
Coxeter diagram
Symmetry group Dihedral (D50), order 2×50
Internal angle (degrees) 172.8°
5 more rows
Explanation:
exterior angle of 25gon = 360/25 = 14.4°
Interior angle = 180 - 14.4 = 165.6°
Interior angle and exterior angles are linear pair
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