Kaleidocycles https://www.mathematische-basteleien.de/kaleidocycles.htm
Descriptions of some rings of pyramids and how to make them
You have 4-sided pyramids instead of tetrahedra. …
Descriptions of some rings of pyramids and how to make them
You have 4-sided pyramids instead of tetrahedra. …
My contribution to stars
Obviously you expect that stars must have „pointed points“. 6th possibility: You
How to make the Magic Folding Cube
The sides don’t have the same colour, but they show nine different pictures, six
How to fold a paper cup
Therefore the quadrilateral is a rhombus and all sides have the same length.
Playings with Soma Cubes
Altogether you have 1×3 + 6×4 = 27 separate smallcubes.
Figures made of 24 Bar Magnets
But two cubes have 16 balls. Here is the hexagon star made of 24 bar magnets.
How to produce egg shaped lines by formulas
Ellipse All points P, for which the distances of two fixed points or foci F1 and F2 have
How to make the Origami Cube
If you like to use the whole square for a cube, you have the formula .
My view on Kusudama Stars
For this page I have chosen the „Origami Igel Kusudama“, whose construction is shown
How to fold a purse.
Cut off a strip of paper, so that you have a rectangle about double as long as broad