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Plane Geometry
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Demonstrations 201 - 220 of 960
Bradley's Hexagram-to-Square Dissection
The Fuhrmann Circle
Geometric Solution of a Quadratic Equation
A Special Case of the Sum of Two Cosines
Archimedes's Neusis Angle-Trisection
Neat Alternating Tilings of the Plane
Three-Centered Arch I: Drawing with a String and Three Nails
Clock Hand Tips
Circle Reflections
Linear Transformations and Basic Computer Graphics
A Line Crossing Two Parallel Lines Makes Alternate Angles Equal
Polar Graph with Rectangular Graph
Two Visual Proofs of a Basic Trigonometric Identity
A Line Has Constant Slope
Self-Avoiding Paths through a Lattice
Squares of Sine and Cosine
Necker Cube: A Variation
Regular Polygon Maker
Dissection Proof of the Addition Formula for Sines
Fermat-Weber Point of a Polygonal Chain
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