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Something You Didn't Learn About Reflections from School!

An in depth look at reflections in geometry. Also, how do objects transform to preserve congruence? Here is a GeoGebra 3D program that can be used for the classroom: https://www.geogebra.org/3d/syvjnOK. Errata: @ 6:24 the equation is correct, but the diagram is a bit off. The adjacent side of the triangle would be r-x where 'r' is the root. Otherwise you can always drop the y-int (amounting to a shift left or right) making it 0 and then the equation follows b/c then the line goes through the origin. ---------------------------------------------------------- Check out my new book -- Learning Isn't Linear: The Essential Problem, Solution, and Project Book for Students, Teachers, and Parents available on amazon.com. Softcover - https://www.amazon.com/Learning-Isnt-... Softcover (color ed.) - https://www.amazon.com/Learning-Isnt-... eBook - https://www.amazon.com/Learning-Isnt-... (The book contains the "rolling rectangle" and the "caterpillar" Desmos programs.) --------------------------------------------------------- "Prioritize long-term learning over short-term test-taking." ----------------------------- #manim_community ----------------------------- #ai #education #mathematics #geometry #desmos #books #teacher #code #grid #python