This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
Post
mqb2766.bsky.social
did:plc:s2uoixske6t33pc4de2ilxsp
For some "extension" stuff (those who like their greeks), you could look at the focus/directrix and pretty much note that the x-axis must be the directrix and the upper blue line the focal chord (passing through the focus), which pretty much gives a directly and also all the angles/grads etc.
2025-08-21T10:35:15.605Z