Cornucopia of Quadrilaterals

About “Cornucopia of Quadrilaterals”

A Cornucopia of Quadrilaterals is a collection of hundreds of mathematical results related to four-sided figures. It includes properties such as the midpoints of any quadrilateral forming a parallelogram, and the Newton line being equidistant from opposite vertices in a convex quadrilateral. The book also features historical results, like those from Euclid and Erdős, and explores connections between quadrilaterals and other geometric shapes. It contains numerous challenging problems and is organized thematically to create a coherent narrative. The book is suitable for both serious study and casual reading, and its clear exposition makes it accessible to readers with a high school geometry background. Instructors in various mathematical fields will find useful examples and problems to enhance their teaching.