This activity is also part of one or more other Books. Modifications will be visible in all these Books. Do you want to modify the original activity or create your own copy for this Book instead?
This activity was created by '{$1}'. Do you want to modify the original activity or create your own copy instead?
This activity was created by '{$1}' and you lack the permission to edit it. Do you want to create your own copy instead and add it to the book?
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
1. Rainbow conics as envelopes of straight lines
2. Conics as envelopes: Parabola
3. Conics as envelopes: Ellipses and Hyperbolas
4. Conics as envelopes: All conics in one image
5. Conics as envelopes: Family of ellipses and hyperbolas
6. Parabolas as envelopes of conic sections
7. Parabola
8. Ellipse and Hyperbola
9. Problem: Circles tangents to given line and circle
For more math details about this construction see: [br][br][url=https://doi.org/10.1080/07468342.2019.1560207]https://doi.org/10.1080/07468342.2019.1560207[/url]