#### INEQUALITY IN QUADRILATERAL-18

Proposed by Radu Diaconu-Romania INEQUALITY IN QUADRILATERAL-18 Solution 1 by Adrian Popa-Romania,Solution 2 by Ravi Prakash-New Delhi-India

#### INEQUALITY IN QUADRILATERAL-17

Proposed by Daniel Sitaru-Romania INEQUALITY IN QUADRILATERAL-17 Solution by Mohamed Amine Ben Ajiba-Tanger-Morocco

#### INEQUALITY IN QUADRILATERAL-16

Proposed by Daniel Sitaru-Romania INEQUALITY IN QUADRILATERAL-16 Solution 1 by Alex Szoros-Romania, Solution 2 by Adrian Popa-Romania

#### INEQUALITY IN QUADRILATERAL-15

Proposed by Daniel Sitaru-Romania INEQUALITY IN QUADRILATERAL-15 Solution by Mohamed Amine Ben Ajiba-Tanger-Morocco

#### INEQUALITY IN QUADRILATERAL-14

Proposed by Daniel Sitaru-Romania INEQUALITY IN QUADRILATERAL-14 Solution by Mohamed Amine Ben Ajiba-Tanger-Morocco

Article by Daniel Sitaru,Claudia Nănuți-Romania IDENTITIES AND INEQUALITIES IN CYCLIC QUADRILATERALS

#### IDENTITY IN QUADRILATER-10

Proposed by Thanasis Gakopoulos-Larisa-Greece IDENTITY IN QUADRILATER-10 Solution by proposer

#### INEQUALITY IN QUADRILATER-6

Proposed by Mustafa Tarek-Cairo-Egypt INEQUALITY IN QUADRILATER-6 Solution by Soumava Chakraborty-Kolkata-India

#### INEQUALITY IN QUADRILATER-1

Proposed by Daniel Sitaru-Romania INEQUALITY IN QUADRILATER-1 Solution 1 by SK Rejuan-West Bengal-India Solution 2 by Myagmarsuren Yadamsuren-Mogolia