Compass and Straightedge

A compass and straightedge are basic mathematical tools used for geometric constructions. A compass creates arcs and circles, helping to measure distances or mark points at specific radii. A straightedge is a ruler without measurement markings, used to draw straight lines between points. Together, they enable precise constructions, such as bisecting angles, creating regular polygons, or replicating lengths, relying solely on geometric concepts without needing numerical measurement. These tools exemplify the classical methods used in geometry to explore and solve spatial problems purely through logical reasoning.