# 3. Normal and Tangent to a Cassini Oval

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This Demonstration shows Steiner's construction of a tangent on a Cassini oval.

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Contributed by: Marko Razpet and Izidor Hafner (August 2018)

Open content licensed under CC BY-NC-SA

## Details

Reference

[1] A. Ostermann and G. Wanner, *Geometry by Its History*, New York: Springer, 2012.

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