Uploaded December 2017 | Updated September 2026, 1 week ago
demonstrations.wolfram.com/ANetThatFoldsIntoAnIcosahedronOrIntoADoubleBiaugmentedTriang
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
This Demonstration shows a net that can folded into two different polyhedra.
Contributed by: Izidor Hafner
Audio created with WolframTones:
tones.wolfram.com
demonstrations.wolfram.com/ANetThatFoldsIntoAnIcosahedronOrIntoADoubleBiaugmentedTriang
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
This Demonstration shows a net that can folded into two different polyhedra.
Contributed by: Izidor Hafner
Audio created with WolframTones:
tones.wolfram.com


![Extending the Rationals with the Square Root of Five
http://demonstrations.wolfram.com/ExtendingTheRationalsWithTheSquareRootOfFive
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
This Demonstration shows examples of arithmetic operations in the extended field ?(SqrtBox[5]), that is, in the field of numbers a+bSqrtBox[5], where a and b are rational numbers.
Contributed by: Izidor Hafner
Audio created with WolframTones:
http://tones.wolfram.com Extending the Rationals with the Square Root of Five](https://i.ytimg.com/vi/UCQthJpINJM/mqdefault.jpg)




![Dissection and Reassembly of Parallelogram of Given Base and Altitude
http://demonstrations.wolfram.com/DissectionAndReassemblyOfParallelogramOfGivenBaseAndAltitude
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
This Demonstration shows Wojtowiczs dissection of two parallelograms ABCD and ABCD with the same base AB and the same altitude. Reference [1] A. McFarland, J. McFarland and J. T. Smith, eds., Alfred Tarski, Early Work in Poland: Geometry and Teaching...
Contributed by: Izidor Hafner
Audio created with WolframTones:
http://tones.wolfram.com Dissection and Reassembly of Parallelogram of Given Base and Altitude](https://i.ytimg.com/vi/VYGeMrSxx8Y/mqdefault.jpg)


