Vertex and Axis of Symmetry

This example demonstrates the geometric properties of a parabola's vertex and axis of symmetry. It involves core mathematical concepts such as the definition of a parabola, vertex coordinates, axis of symmetry equation, and analytical geometry. The construction uses GeoGebra commands like Segment to draw segments v and h, and defines objects v, h, f, A, a, button1, text1, text2, text3, s, B, C, D, b, c, text4, text5, text6. It is suitable for high school students to learn and understand the geometric properties of parabolas, useful for classroom instruction or self-exploration.