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Geometry
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Demonstrations 2321  2340 of 3407
A Dissection Proof of Pythagoras's Theorem
Comet Moving about the Sun
The Torricelli Point
Generating Conics by Newton's Method
Logarithmic Spiral
Inversive Geometry VI: Inverting a Polar Grid
Inversive Geometry V: Circle through Three Points
Generating a Cardioid III: Circles Passing through a Point
A Polygon from Its Midpoints
Problems on Circles XI: Perpendicular Tangents to an Ellipse
Theorem of the Equal Incircles
Yates's Trisector
Inversive Geometry IV: Inverting a Point with a Compass in Three Steps
Copernicus's Theorem
Rolling Polygons
Folding an Equilateral Triangle in a Square
Generating a Lemniscate II: Rotating Line
Cross Sections of Graphs of Functions of Two Variables
The Malfatti Problem
Enumerating Pythagorean Triangles
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