Michael Diao and Andrew Wu,

The Radical Axis of the Circumcircle and Incircle of a Bicentric Quadrilateral,

Forum Geometricorum, 19 (2019)


Abstract:  We present an unusual method to identify the radical axis of the circumcircle and incircle of a bicentric  quadrilateral. Along the way, we demonstrate

a number of interesting properties of the configuration.


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