TY - JOUR AU - Etayo Gordejuela, José Javier AU - Martínez, Ernesto PY - 1988 DO - 10.1017/S0305004100065439 SN - 0305-0041 UR - https://hdl.handle.net/20.500.14352/57395 T2 - Mathematical Proceedings of the Cambridge Philosophical Society AB - Beardon gave a procedure for constructing a polygon with prescribed angles. For each ordered set of angles Beardon's polygon is unique up to congruence. The polygon obtained this way has an inscribed circle. It is possible to obtain by means of these... LA - eng M2 - 261 PB - Cambridge University Press KW - Moduli of Riemann surfaces KW - Teichmüller theory KW - Structure of modular groups and generalizations KW - Arithmetic groups KW - Riemann surfaces KW - Hyperbolic and elliptic geometries (general) and generalizations KW - Topology of E 2 KW - 2 -manifolds TI - Hyperbolic polygons and NEC groups TY - journal article VL - 104 ER -