Parabola through three points

This example demonstrates how to determine the equation and graph of a parabola given three points. It involves core mathematical concepts such as parabolas, quadratic functions, coordinate geometry, and quadratic equations. The construction uses GeoGebra commands like Textfield for text input fields, points A, B, C, input fields CampoInserimento1, CampoInserimento2, CampoInserimento3, point p, and text objects testo2, d, testo1, testo4_1. It is suitable for high school students learning about the geometric properties and algebraic representation of parabolas.