ConsCompass geometry

ConsCompass geometry is a drafting instrument for your pocket. It gives you exactly two tools — a ConsCompass geometry and a straightedge — and asks you to build geometry the way Euclid did: point by point, circle by circle, with nothing measured and nothing guessed. Every line you draw remembers where it came from. A circle is not just a shape; it is "the circle centred at A through B." A point is not just a dot; it is "the first place where those two circles meet." Because each element stores its own construction recipe, you can grab any base point and drag it — and the entire figure recomputes instantly. The perpendicular bisector stays perpendicular. The triangle stays equilateral. Watching geometry survive the drag is the moment the theorem stops being an exercise and becomes an obvious fact. Built to teach, graded fairly Five classical constructions ship with the app: the…