International Journal of Geometry

2026

MAMUKA MESKHISHVILI – Concentric circles each passing through one vertex of each of two regular polygons

MAMUKA MESKHISHVILI – Concentric circles each passing through one vertex of each of two regular polygons

J. CHEN, F. G. MARQUES, D. M. GRANADO, A. PERUCCA and S. SCHWARTZ – Congruence theorems for triangles involving angle bisectors

J. CHEN, F. G. MARQUES, D. M. GRANADO, A. PERUCCA and S. SCHWARTZ – Congruence theorems for triangles involving angle bisectors

$MARTIN JOSEFSSON – Quadrilaterals satisfying {T_a}^n + {T_c}^n = {T_b}^n + {T_d}^n$

MARTIN JOSEFSSON – Quadrilaterals satisfying {T_a}^n + {T_c}^n = {T_b}^n + {T_d}^n

ARNE ERIKSON – A special line through two circles’ external center of similarity

ARNE ERIKSON – A special line through two circles’ external center of similarity

PARIS PAMFILOS – Around Menelaus’ and Ceva’s theorems

PARIS PAMFILOS – Around Menelaus’ and Ceva’s theorems

ARNE ERIKSON – Conics associated with Apollonius’ problem

ARNE ERIKSON – Conics associated with Apollonius’ problem

CLAUDIO ESPERANÇA, RONALDO GARCIA and DAN REZNIK – Poncelet spatio-temporal surfaces and tangles

CLAUDIO ESPERANÇA, RONALDO GARCIA and DAN REZNIK – Poncelet spatio-temporal surfaces and tangles

G. T. VICKERS – Tangents to a cubic curve (II)

G. T. VICKERS – Tangents to a cubic curve (II)

SPIRIDON A. KURUKLIS – A unified inverse proof for all 18 Morley triangles

SPIRIDON A. KURUKLIS – A unified inverse proof for all 18 Morley triangles

«
1
2
3
»