Reflection across Vertical, Horizontal, and Oblique Lines

2019-03-13 03:46
This applet demonstrates reflection in plane geometry. It dynamically illustrates the reflection of polygons, such as triangles and trapezoids, across vertical, horizontal, and arbitrary oblique lines. Users can visually observe the congruence between the original and reflected figures in terms of coordinates, side lengths, and angles, gaining a deeper understanding of geometric transformations an