In this book you can find some classic constructions to obtain conics as envelopes of straight lines. An interesting result while studying these conics is that you can find parabolas as envelopes of families of ellipses and hyperbolas. Most of the mathematical details can be found here:
[b]Conics as Envelopes of Families of Plane Curves[/b]
[url]https://doi.org/10.1080/07468342.2019.1560207[/url]
If you find this useful, please let me know j.ponce@uq.edu.au or send me a tweet @PonceCampuzano
