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Jay Warendorff
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Demonstrations 61 - 80 of 272
A Concurrency Generated by Circles about a Triangle's Sides and Lines through an Internal Point
A Circumcircle through the Midpoint of a Triangle's Side
A Concurrency Generated by the Angle Bisectors
The Gergonne Point
The Intersection of Circumcircles of Medial Triangles
Intersecting Circles and a Right Angle
A Cyclic Quadrilateral Concurrency
The Line through the Incenter and Circumcenter
A Collinearity between the Nine-Point Center, the Foot of an Altitude, and a Midpoint
A Triangle Formed by the Centers of Three Nine-Point Circles
A Parallelogram with Vertices on Two Circles
Area of a Hexagon Formed by the Vertices and Altitude Extensions of a Triangle
Kosnita's Theorem
A Concurrency of Lines Joining Orthocenters
Two Triangles of Equal Area on Either Side of an Angle Bisector
The Distances to the Incenter and Excenters from the Circumcenter
Inscribed and Central Angles in a Circle
The Triangle Formed by the Centers of the Miquel Circles
Projections of Midpoints onto Circumradii
The Sum of the Reciprocals of the Exradii
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