Animation of Dudeney's Dissection Transforming an Equilateral Triangle to a Square
In 1902, Henry Ernest Dudeney posed the problem of cutting an equilateral triangular region into 4 pieces that can be rearranged to form a square region. His published solution notes that the pieces can be hinged so as to smoothly rotate from one form to the other. We use Maple packages in linear algebra, geometry, and plotting to construct a picture of the pieces, and then animate the construction.
