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Triangles
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Demonstrations 281  300 of 517
The Area of the Incentral Triangle
A Concurrency from Circumcircles of Subtriangles
A Concurrency from the Midpoints of Line Segments through the Circumcenter
A Concurrency from the Reflections of the Contact Points with the Excircles
A Concurrency from a Point and a Triangle's Excenters
Concyclic Points from Reflections of the Circumcenter about the Altitudes
Collinearity of a Triangle's Circumcenter, Incenter, and the Contact Triangle's Orthocenter
The Schiffler Point
A Concurrency Generated by Lines through the Orthocenter and Circles about a Triangle's Sides
Another Concurrency Generated by Circles about a Triangle's Sides and Lines through an Internal Point
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
The Line through the Incenter and Circumcenter
A Collinearity between the NinePoint Center, the Foot of an Altitude, and a Midpoint
A Triangle Formed by the Centers of Three NinePoint Circles
Area of a Hexagon Formed by the Vertices and Altitude Extensions of a Triangle
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