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ellipsoid from circles
Ellipsoid from Circular Cross Sections
Peaucellier linkage
Peaucellier Linkage II
Chebyshev linkage
Chebyshev Linkage II
slide-together model made with squares
Slide-Together Models Made with Squares
slide-together model made with pentagons
Slide-Together Models Made with Pentagons
slide-together model made with hexagons
Slide-Together Models Made with Hexagons
slide-together model made with decagons
Slide-Together Models Made with Decagons
slide-together models made with star decagons
Slide-Together Models Made with Star Decagons
slide-together model made with triangles
Slide-Together Model Made with Triangles
Pass a Straight Line Through a Curved Slot
Pass a Straight Line Through a Curved Slot
hyperbolic paraboloid model
Hyperbolic Paraboloid from Parabolic Cross Sections
paper cups glued into a model of a truncated icosahedron
Truncated Icosahedron from Paper Cups
Weave a Rhombic Dodecahedron
Weave a Rhombic Dodecahedron
four dragon curves tiling the plane
Dragon Curve
Moiré Ellipses and Hyperbolas from Circular Grids
Moiré Ellipses and Hyperbolas from Circular Grids
moiré pattern showing hyperbolas
Moiré Conic Sections from Linear and Circular Grids
alternate methods of creating polyhedra
Alternate Methods of Creating Polyhedral Models
device to pair up teams for games
How to Schedule Soccer Games
Fold a Vault
Fold a Vault
woven dodecahedron
Weave a Dodecahedron
surface made by curved folding
Curved Folding
ellipse that transforms into heart
Ellipse to Heart
Pendulum Designs
Pendulum Designs
flipping arrows on paper
Magic Flipping Arrows
double Möbius strip
Double Möbius Strip
other Möbius-like models
Other Möbius-like Models
Fold a Regular Pentagon
Fold a Regular Pentagon
folded star
Fold a Five-Pointed Star
octagon from a square
Fold a Regular Octagon Method I.
different configurations of the move form
Cubic Move Form