Reflect a shape using distort & transform

I had no idea this existed! This is so helpful to me, as I took this course to refresh myself on transformations, since I am working through a book on creating tessellations (Helen, please consider doing a course on tessellations - I know you'd be fantastic at it) and flipping and turning the shapes to interlock was getting to be frustrating. This tool/function is a big help. Thank you!