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Geometry
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Demonstrations 2561  2580 of 3020
Quadrilateral Slide
Bradley's TwoTrianglestoOne Dissection
The Area of a Triangle as Half a Rectangle
Inscribed Angles That Intercept the Same Arc
Duals by Rotating the Edges of Polyhedra
Interactive Rings Tessellation
Loyd's TwoGreekCrossestoaSquare Dissection
Pappus Chain
Circle Images
Witch of Agnesi
Nets of Polyhedra
Poincaré Hyperbolic Disk
Spieker Center Triangle Construction
Gerling's 12Piece Dissection of an Irregular Tetrahedron into Its Mirror Image
Tangent Circles
Division of the Opposite Side by an Angle Bisector
The Eyeball Theorem
Equally Distant Chords
Side Lengths Opposite Unequal Angles
Determinants Seen Geometrically
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