This example generates a geometric composition of triangles that fill the browser window. Polygons are drawn in two distinct groups, radiating from the top corners downward to create an abstract, layered pattern. The visualization is built with React and rendered as SVG, using D3.js functions such as `select` and `join` to append polygons dynamically. The polygon coordinates are computed procedurally based on the window dimensions, dividing the width and height into incremental steps.