C0501_e_Demo1: Median Value in Trapezoid and Ellipse with Parallelogram

This example demonstrates how median values and related terms are dynamically displayed within geometric figures such as trapezoids and ellipses, alongside parallelograms. The core mathematical concepts include median value, trapezoid, ellipse, parallelogram, and place-value decomposition of numbers (e.g., hundreds, units). The construction uses GeoGebra's Text command to create multiple text objects (text1 to text7) linked to numeric objects (Hundreds, Units, a, b, n, E) for real-time value updates. It is suitable for middle school mathematics teaching, helping students intuitively grasp numerical characteristics within geometric contexts and place-value concepts, and can serve as a dynamic demonstration template.