2D Shapes & Areas

Two-dimensional (2D) shapes exist flat on a single plane. They possess length and width, but no depth. The most common examples are squares, rectangles, triangles, and circles. Calculating their properties forms the foundation for many practical tasks in construction, crafting, and design.

The Difference Between Area and Perimeter

When working with flat shapes, we always encounter two primary metrics: The perimeter describes the total length of the outer boundary line of a shape. The area, on the other hand, indicates how large the region inside that boundary is, expressed in square units.