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Plane Geometry
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Demonstrations 1  20 of 1294
Center of Gravity of an LShaped Sheet and the Golden Ratio
New this month
Mamikon's Method for the Area of the Cycloid
New this month
Area of an Inscribed Triangle in Terms of the Product of Its Sides
Observed Distribution of Random Chord Lengths in a Circle
A Circle Defined from an Equilateral Triangle via Pythagoras
Art Gallery Problem
Constructing a Steiner Tree for Five Points
Polar Curve Generator with FiveBar Linkage
Problems on Circles II: Halving a Set of Points
Problems on Circles I: Dissecting a Circle
Morley's Theorem
Triangle Centroid
Paper Folding Using Two Points
Determining the Intersection of Two Lines Graphically
The Facilities Location Problem
Area Among Four Curves In A Square
Constructions by Reflecting in a Line
Melting Tile Illusion
Rotating a Lattice of Points
Locus of the Center of a Circle Inscribed in a Circular Segment
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