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Jay Warendorff
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Demonstrations 161 - 180 of 272
The Product of the Inradius and Semiperimeter of a Triangle
The Product of an Altitude and the Circumradius of a Triangle
An IMO Problem Involving Concurrency
The Product of the Side Lengths of a Triangle
The Medial Triangle and Concurrency at the Nagel Point
Four Concurrent Lines in a Cyclic Quadrilateral
A First Morley Triangle Concurrence
Relations between Some Triangles Associated with Excircles
A Relation between Incircles and Excircles
A Generalization of Hansen's Theorem
A Parallelogram Defined by the Centers of Four Circumcircles
The Contact Triangle and Two Other Subtriangles
The Nagel Point
Nagel's Theorem
Second Droz-Farny Circle
First Droz-Farny Circle
Barrow's Inequality
The Taylor Circle
The Circumcircles of Four Triangles
A Congruent Angle inside the Incircle
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