Dissection of a Square and an Isosceles Right Triangle into a Square

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This Demonstration shows Dudeney's dissection of a square into a square, with an isosceles right triangle appearing in an intermediate stage.
Contributed by: Izidor Hafner (December 2015)
Open content licensed under CC BY-NC-SA
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Details
Reference
[1] D. Wells, The Penguin Book of Curious and Interesting Puzzles, Penguin Books, New York, 1993 p. 269.
Permanent Citation
"Dissection of a Square and an Isosceles Right Triangle into a Square"
http://demonstrations.wolfram.com/DissectionOfASquareAndAnIsoscelesRightTriangleIntoASquare/
Wolfram Demonstrations Project
Published: December 30 2015