Rectangle under parabola

This example demonstrates how to construct a rectangle under a parabola and visualize its area changing with the parabola's parameters. Key math concepts include parabola equations, coordinate geometry, area calculation, and geometric transformations. Construction highlights the use of GeoGebra commands: Point, OrthogonalLine, Intersect, and Polygon. Suitable for high school mathematics education, illustrating the integration of function graphs and geometric shapes, and parametric construction techniques.