Maximize Triangle Area (Part 2)

This example demonstrates how to dynamically adjust triangle vertices to explore the maximum area under a fixed perimeter, involving core math concepts like coordinate geometry, differential calculus (derivatives), integral calculus, and optimization. Key GeoGebra commands used include Function, Polygon, PointIn, and IntegralBetween; objects like f, a, b, c, and poly1 are constructed. Suitable for high school and above, illustrating the application of calculus in geometric optimization problems.