A wonderful example of this is: The Continuity of Splines https://www.youtube.com/watch?v=jvPPXbo87ds https://www.youtube.com/watch?v=jvPPXbo87ds and The Bea

A wonderful example of this is: The Continuity of Splines https://www.youtube.com/watch?v=jvPPXbo87ds https://www.youtube.com/watch?v=jvPPXbo87ds and The Beauty of Bézier Curves https://www.youtube.com/watch?v=aVwxzDHniEw https://www.youtube.com/watch?v=aVwxzDHniEw by Freya Holmér https://www.youtube.com/@acegikmo https://www.youtube.com/@acegikmo While not animated, I find: _Euclid's Elements_ (Joyce's Java Version) very helpful https://mathcs.clarku.edu/~djoyce/java/elements/elements.html https://mathcs.clarku.edu/~djoyce/java/elements/elements.htm... Since my current project has pretty much devolved to putting a UI on various trigonometric functions and allowing the user to program them, I'd be very glad of other resources in this space (currently working through Hilbert's _Geometry and the Imagination_ and the book which matches https://projectivegeometricalgebra.org/ https://projectivegeometricalgebra.org/ and just finished the _Make:Geometry/Trigonometry/Calculus_ series, and have had recommended Curves and Surfaces for CAGD: A Practical Guide by Gerald Farin)