Reflections
watch this video: https://www.pbslearningmedia.org/resource/muen-math-g-reflection/reflection/
https://www.mathplayground.com/reflection_painter.html
https://www.topmarks.co.uk/symmetry/symmetry-matching PATTERNS
https://www.topmarks.co.uk/symmetry/symmetry-sorting
https://www.sheppardsoftware.com/math/geometry/symmetry-game/