11B-2A: Dynamic Geometry with Circles and Tangents

This example demonstrates a dynamic geometric construction involving a circle, square, tangent lines, and curve sketching, showing relationships among elements through rotation and intersection. Core mathematical concepts include tangent properties of circles, angle measurement, segment rotation, and intersection loci. The construction uses GeoGebra commands such as Circle, Point, Angle, Segment, Rotate, Ray, and Intersect, creating multiple points, segments, rays, and angles that change dynamically. Suitable for high school or early college students to explore geometric constructions and dynamic transformations, and useful for teachers demonstrating tangent properties and rotational symmetry.