Visualizing Quadrance with Circles - Universal Hyperbolic Geometry - NJ Wildberger

Explore the fundamental concept of quadrance between points in universal hyperbolic geometry through a detailed examination of circles in this 35-minute video lecture. Discover how circles, defined as conics in terms of quadrance, can appear as ellipses, parabolas, or hyperbolas in two-dimensional representations. Investigate three different families of circles with distinct centers, gaining a comprehensive understanding of this crucial geometric concept. Learn how quadrance replaces the traditional notion of distance in universal hyperbolic geometry, and visualize its applications through carefully illustrated examples.