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Plane Geometry
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Demonstrations 121  140 of 1237
The Plemelj Construction of a Triangle: 3
The Plemelj Construction of a Triangle: 1
Find the Angle Whose Sine is the Product of the Sine and Cosine of Two Other Angles
Square Spiral Tiling
Outer Billiards on Regular Polygons
Possible Counterexamples to the Minimal Squaring Conjecture
Geometric Solution of a Trigonometric Equation
Geometric Solution of a Quadratic Equation Using Carlyle's Circle
The Plemelj Triangle via the Fixed Point of a Transformation
Algebraic Solution of the Plemelj Triangle Construction Problem
Construction of an SSA Triangle
The Double SubdivisionNetwork Method
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
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