Title

Making Ellipses by Folding Disks

Publication Date

Winter 2-9-2021

Description

In an article entitled The Ellipse, Martin Gardner explains a simple way to `fold' an ellipse inside a circle. It is surprising that an ellipse appears through folding, but there are more surprises in store: For every point on the circle there is a triangle with that point as one of the vertices that both circumscribes the ellipse and is inscribed in the circle.

Journal

Mathematics Magazine

Volume

94

Issue

1

First Page

53

Department

Mathematics

DOI

https://doi.org/10.1080/0025570X.2021.1849923

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