International Journal of Geometry

2026

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

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

MARTIN JOSEFSSON – Characterizations of parallelograms – part 3

MARTIN JOSEFSSON – Characterizations of parallelograms – part 3

HUSSEIN KHAYOU – It is all about seeing things in perspective — Part I

HUSSEIN KHAYOU – It is all about seeing things in perspective — Part I

1
2
3
»