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Geometry
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Demonstrations 181  200 of 2631
Congruent Numbers
NoThreeinLine Problem
Three Orthogonal Projections of Polyhedra
Esser's Heart Surface
Engineering Drawings
Helix with Polygonal Cross Section
Ring of 25 Spikeys
Sliding Octahedra
Arrangements of Golden Prolate Rhombohedra
Marden's Theorem
All Roots of Two Systems of Algebraic Equations
Complex Power Spirals
Tricolor Yin and Yang
Sum of Numbers on Invisible Faces
From Quaternion to 3D Rotation
Halving the Perimeter of a Zigzag Polygon
120 Rhombic Dodecahedra of the Second Kind Arranged in a Ball
Wavy Square Prism
Steinhaus' Billiard Ball Loop
Isolated Singularities
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