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: www.geogebra.o....
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.
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15 окт 2024
