Free lab

Conic Workshop

String-drawn ellipses, the eccentricity morph, secants becoming tangents, moving and turning axes, classifying any quadratic, and pencils of conics.

Focus, directrix and eccentricity

The string ellipse (P may leave the curve)

The hyperbola and its box

Tangents and reflection

Moving the axes with an xy-term present

Turning the axes: xy = 2

Conic classifier

Pencils of circles and conics

The general equation of a circle