Geometric Construction and Verification of Parabola Definition

This GeoGebra example demonstrates the geometric construction and verification of the parabola definition. A parabola is the locus of points in a plane equidistant from a fixed point (focus) and a fixed line (directrix. Construction steps: 1) Use Line command to draw the directrix; 2) Use Parabola command to create a parabola with focus and directrix; 3) Use OrthogonalLine command to construct perpendicular from focus to directrix; 4) Use Intersect command to find key intersection points; 5) Use Segment command to draw relevant line segments for verifying the parabola definition. Suitable for middle and high school coordinate geometry teaching, helping students understand parabola concepts, master geometric construction techniques, and verify locus properties.