Parabola Demonstration by Sam

This example demonstrates the geometric properties of parabolas and the intersection relationships between function graphs. Key math concepts include parabola definition, function graphing, angle measurement, and the relationship between secant and tangent lines. The construction uses the Intersect command to find intersection points A, B, and parameters a, h, k, c to control the position of the parabola and shapes. Suitable for high school coordinate geometry teaching to understand parabola parameter equations and dynamic changes.