Reflection over the y=x line
Reflection Rules in Math, Graph, Formula & Examples - Lesson
Reflection of Overlapping Triangles – GeoGebra
1.3: Transformations and the Inverse of a Function
Reflecting a Shape in y = x Using Cartesian Coordinates (Key Stage 3)
1.3: Transformations and the Inverse of a Function
Mathematics of 2-Dimensional Lattices Foundations of Computational Mathematics
Mirror lines can be placed anywhere you just reflect
Reflection of Shapes on Mirror Line, Definition & Examples - Lesson