Intersection of Three Planes Demo

This example demonstrates the intersection points of three planes in 3D space, covering scenarios like parallel planes, intersection at a point, intersection along a line, or no intersection at all. Key mathematical concepts include plane equations, vector cross product, 3D analytical geometry, and solving systems of linear equations. It uses GeoGebra commands IntersectPath and Intersect, along with objects a, b, c, g, h, i, A to represent planes and intersection points, making it suitable for high school and above students learning solid geometry and analytical geometry to visually understand plane relationships and calculate intersections.