This example demonstrates fundamental SVG shapes within a single static scene, showing how basic geometric elements compose a simple graphic. It includes a red rectangular border, a semi-transparent blue circle, a black diagonal line, and a path outlining an angular polyline. The code defines these shapes directly in SVG markup embedded in an HTML file, using attributes like `cx`, `cy`, `r`, and `d` to set positions and geometry. No external libraries are used; the visualization relies entirely on native SVG rendering in the browser.