3D Geometry Demonstration of a Cross-Shaped Prism

This applet demonstrates the 3D structure of a cross-shaped prism, also known as a cruciform prism. Constructed using GeoGebra's Polygon and Prism commands, it visually presents how a cross-shaped base is extruded vertically to form a three-dimensional solid. The applet allows users to interactively explore the geometric properties of the figure, including its faces, edges, and vertices. Students can rotate the model in 3D space to examine the prism from multiple perspectives, observing how the cross-shaped cross-section remains constant throughout the height of the solid. This interactive exploration helps learners grasp key concepts such as the definition of a prism, the relationship between the base and the lateral faces, and the spatial arrangement of faces and edges in three-dimensional geometry. The applet serves as an excellent visual aid for junior high school students studying solid geometry, reinforcing their understanding of how two-dimensional shapes translate into three-dimensional solids through extrusion. By manipulating the model, students can develop spatial reasoning skills and deepen their comprehension of prism characteristics, making abstract geometric concepts more concrete and accessible.