This example demonstrates the basic building blocks of SVG graphics, showing a pair of red circles stacked above a red triangle. The code uses raw SVG elements—specifically `<circle>` and `<polygon>`—within an inline `<svg>` container. Rather than relying on a JavaScript library like D3, it directly defines the shapes’ positions and radii through SVG attributes, such as `cx`, `cy`, and `r`, and sets a shared fill color. The rendering approach is purely declarative markup, with the shapes’ coordinates and sizes hard-coded in the HTML file to illustrate fundamental vector-drawing syntax.