Parabola Exploration - Focal Length

This example demonstrates the geometric properties of a parabola, focusing on the relationship between the focus, directrix, and focal length. Key mathematical concepts include the definition of a parabola, focus, directrix, and distance calculations. The construction uses GeoGebra commands like Parabola, Vertex, Distance, Midpoint, and objects such as A, a, c, text1, B, distanceAB, TextAB. It is suitable for high school coordinate geometry learning to understand basic parabolic properties and optimization problems.