International Journal of Geometry

Vol. 12 (2023), No. 1, January

MARTIN JOSEFSSON and MARIO DALCÍN – More new characterizations of extangential quadrilaterals
ADRIAN BUD and OVIDIU T. POP – Theoretical considerations on an issue from Romanian National Mathematical Olympiad 2019
MAMUKA MESKHISHVILI – Two non-congruent regular polygons having vertices at the same distances from the point
MARK SHATTUCK – A refinement of Tóth’s inequality
NORIHIRO SOMEYAMA – Lengths of edges and areas of bulging triangles
GIOVANNI LUCCA – Circle chains inside the arbelos and integer sequences
ANTONELLA PERUCCA and EMILIANO TORTI – Congruence theorems for convex polygons involving sides, angles and diagonals
DAN REZNIK and RONALDO GARCIA – Poncelet parabola pirouettes