Oblique Pyramid - 3D Geometric Model

① This example demonstrates an oblique pyramid with a square base, where the apex is not directly above the center of the base, providing a clear visual of its 3D structure. ② Core mathematical concepts include the definition of a pyramid in solid geometry, its apex, base, lateral edges, lateral faces, and the distinction between slant height and perpendicular height, fostering spatial reasoning and classification of geometric solids. ③ Construction details: Using GeoGebra commands such as Point to create base vertices A, B, C, D and apex E, Pyramid to build the solid, and Segment to generate all edges (edgeAB, edgeBC, etc.) and faces (faceABCD, faceABE, etc.), with auxiliary objects g and h possibly for annotations or auxiliary lines. ④ Suitable for high school or early college students to understand geometric properties of pyramids, and as a visual teaching aid in solid geometry to differentiate between right and oblique pyramids.