Curvature via Limiting Intersection of Nearby Normals

This example demonstrates how curvature can be expressed through the limiting intersection of nearby normals, visually representing the bending degree of a curve. Key math concepts include curvature, normal lines, limits, and analytical geometry. It uses GeoGebra commands like Point, Tangent, OrthogonalLine, and Intersect. Suitable for high school and above students learning curve analysis and introductory calculus.