Trapezoidal Sum Demonstration

This example demonstrates the application of the trapezoidal sum method in integral calculation, visually showing how trapezoidal approximation computes the area under a curve dynamically. It involves core mathematical concepts such as integral, geometric mean, cosine theorem, triangle properties, pie or circle charts, and scatter plots. The construction leverages GeoGebra commands and objects like Point, TrapezoidalSum, Textfield, and IntegralBetween as outlined in the summary. Suitable for high school and above students to understand the connection between numerical integration and geometric intuition.