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Plane Geometry
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Demonstrations 101  120 of 1229
Bisecting an Angle with a TwoEdged Ruler
Constructing a Parallel Line through an Inaccessible Point
Constructing a Line through a Given Point and an Inaccessible Point
The Plemelj Construction of a Triangle: 4
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
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