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Triangles
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Demonstrations 161  180 of 462
Triangles on a Sphere
The Johnson Circles
Triangles in the Poincaré Disk
Knopp's Osgood Curve Construction
Incircles in Right Triangles
The Conway Circle
Median Theorem for Polygons
Lucas Circles
Kenmotu Circle
A Dissection Proof of Pythagoras's Theorem
The Torricelli Point
Theorem of the Equal Incircles
Folding an Equilateral Triangle in a Square
The Malfatti Problem
Enumerating Pythagorean Triangles
Pólya's SpaceFilling Curve
The Eutrigon Theorem
A Concurrency from the Reflection of the Incircle's Contact Points across the Incenter
Concurrency via Midpoints
A Triangle Formed by the Centers of Three Circles
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