Hand-in-Hand Model (Congruent Triangles with a Common Vertex)

This example demonstrates the classic Hand-in-Hand geometric model, featuring two triangles sharing a common vertex. By rotating one triangle, it constructs congruent triangles. Using GeoGebra commands like Rotate and Intersect, it dynamically illustrates core properties such as equal segments and fixed angles, aiding the study of congruent triangles and geometric transformations.