Pyramid with Square Base: 3D Construction and Dynamic Exploration

① This GeoGebra example demonstrates the complete 3D construction of a pyramid with a square base, including the base polygon, four lateral edges, four triangular faces, and the apex. ② Core mathematical concepts include solid geometry: definition of a pyramid, relationships between base and lateral faces, the apex's projection onto the base, and basic elements of polyhedra (faces, edges, vertices). ③ Construction details: from the summary, the Polygon command creates the square base (poly1), and the Pyramid command generates the pyramid using the base and height parameter h; objects include vertices A, B, C, D, height h, lateral faces (faceABF, faceBCF, faceCDF, faceADF), lateral edges (edgeAF, edgeBF, edgeCF, edgeDF), plus auxiliary lines f, g, i, j and point F. ④ Suitable for middle and high school solid geometry lessons, this example helps students intuitively understand pyramid structure, surface area and volume calculations, and can serve as a dynamic tool to observe shape changes by adjusting the height slider h.