Construct a Midpoint

This example demonstrates how to construct the midpoint of a line segment using GeoGebra's geometric construction tools. The core mathematical concept is the definition of a midpoint—the point equidistant from both endpoints—and the fundamental idea of compass-and-straightedge construction. Construction steps: use the Segment command to create segment AB, involving points A, B, and segment a; then determine the midpoint using the midpoint tool or by constructing the perpendicular bisector. This example is suitable for middle school geometry lessons, helping students understand the midpoint concept and master basic GeoGebra operations, and can also serve as a foundation for studying perpendicular bisectors and symmetry.