#### TANGENTIAL QUADRILATERAL-1

Math Note by Mustafa Tarek Baddour-Cairo-Egypt TANGENTIAL QUADRILATERAL-1

#### A NICE EQUATION BY JHOAW CARLOS

Proposed by Jhoaw Carlos-La Paz-Bolivia A NICE EQUATION BY JHOAW CARLOS Solution by proposer

#### A NICE INEQUALITY BY NGUYEN VAN NHO-4

Proposed by Nguyen Van Nho-Nghe An-Vietnam A NICE INEQUALITY BY NGUYEN VAN NHO-4 Solution by proposer

#### A NICE INEQUALITY BY NGUYEN VAN NHO-3

Proposed by Nguyen Van Nho-Nghe An-Vietnam A NICE INEQUALITY BY NGUYEN VAN NHO-3 Solution by proposer

#### A NICE INEQUALITY BY NGUYEN VAN NHO-2

Proposed by Nguyen Van Nho-Nghe An-Vietnam A NICE INEQUALITY BY NGUYEN VAN NHO-2 Solution by proposer

#### A NICE VIETNAMESE INEQUALITY

Proposed by Nguyen Van Nho-Nghe An-Vietnam A NICE VIETNAMESE INEQUALITY Solution by proposer

#### A NICE INEQUALITY BY NGUYEN VAN NHO

Proposed by Nguyen Van Nho-Nghe An-Vietnam A NICE INEQUALITY BY NGUYEN VAN NHO Solution by proposer

#### A NICE INTEGRAL BY V.M.POPA

Proposed by Vasile Mircea Popa-Romania A NICE INTEGRAL BY V.M.POPA Solution by Zaharia Burghelea-Romania and Khalef Ruhemi-Jarash-Jordan