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Demonstrations 61 - 80 of 1174
Roulette (Hypotrochogon) of a Polygon Rolling inside a Circle
Cylindrical Anamorphosis of Some Popular Images
Constructing a Rectangle with the Same Area as a Pentagon
Tarski's Adaptation of Wojtowicz's Argument on Optimal Dissection of a Unit Square
Five Concyclic Points in a Triangle
Triangles with Equal Area Are Equidecomposable (Equivalent by Dissection)
Roulette (Hypotrochogon) of a Circle Rolling inside a Regular Polygon
Dissection and Reassembly of Parallelogram of Given Base and Altitude
Roulette (Hypotrochogon) of a Polygon Rolling inside Another Polygon
Roulette (Epitrochogon) of a Regular Polygon Rolling around Another Regular Polygon
The Nagel Line
Power of a Point Theorem
Roulette (Epitrochogon) of a Disk Rolling around a Regular Polygon
A Visual Proof of Thales's Intercept Theorem
Swing-and-Twist Hinged Dissection of One Regular Heptagon into Seven
Convergent Series of Rectangles to Fill a Unit Square
Euclid's Formula and Properties of Pythagorean Triples
Logarithmic Spirals and Möbius Transformations
Polar Plots Drawn by a Mechanical Linkage
Dissection of an Octagram into Five Octagrams
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