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What is Angle Conditions for Tangential Quadrilaterals about?
This document presents five characterizations of tangential quadrilaterals involving angles or circles. It summarizes two existing characterizations involving angles and diagonals. It then proves three new characterizations: 1) A quadrilateral is tangential if the sum of two opposite angle bisectors equals π. 2) A quadrilateral is tangential if the angle between diagonals satisfies a given formula involving the lengths of the diagonal segments. 3) A quadrilateral where one diagonal bisects the other must be
- Author
- Deviana Darmawan
- Language
- EN