This example demonstrates fundamental SVG shapes—a circle, rectangle, and line—drawn directly in an HTML document using the SVG markup language. The visuals show how each element’s geometry and styling are defined through attributes like `cx`, `r`, `x`, `y`, `stroke`, and `fill`. The code creates a static scene with a blue outlined rectangle, a green diagonal line, and a dark circle using simple SVG elements. No JavaScript libraries are used; rendering relies entirely on native browser SVG support. The shapes illustrate basic vector graphics primitives without interactive behavior or data binding.