Reflection over Y=X

This example demonstrates the reflection transformation of points, line segments, and polygons over the line Y=X. It involves core mathematical concepts such as symmetry, complex numbers, translation, exponential functions, multiplication, and the unit circle. The construction uses GeoGebra commands like Polygon, Line, and Mirror, with objects including A, B, C, poly1, c, a, b, B', A', C', poly3, f, d, e, D, E, g, target1, target2, target3, poly1', c'_1, a'_1, b'_1, step1, step2, step3, correct, nailedIt, tryAgain, button1, h. It is suitable for high school students learning geometric transformations and the application of complex number geometry.