Proving Triangles Congruent Exercise (1)

This example demonstrates how to prove triangles congruent using transformational geometry. It visually shows the conditions and methods for triangle congruence through geometric transformations like reflection, rotation, and translation. Key construction steps involve using GeoGebra commands Polygon, Rotate, Vector, and Translate to manipulate objects A, B, C, poly1, c, a, b, D, α, A', B', C', poly1', c', a', b' to construct and verify congruent triangles. Suitable for high school mathematics teaching to understand and master the criteria for triangle congruence.