Two-dimensional (2D) shapes are completely flat. They have two dimensions – length and width. A polygon is a closed 2D shape with straight sides that meet at vertices. Polygons can be regular or ...

Feb. 10, 2025 — Conserving and restoring Southeast Asia's carbon-rich peatlands and mangroves could mitigate more than 50 per cent of the region's land-use carbon emissions, according to a new ...