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im.g.1.15.1 Back to the Start

Here is a segment AB: If you translate the segment up 5 units, then down 5 units, it looks the same as it did originally.

1. What other rigid transformations create an image that fits exactly over the original segment? Do it with the applet to show yourself that your transformation or composition of transformations works.

2. Are there any single rigid motions that do the same thing? If so, what are they? Again, try doing it with the applet to show yourself that it works.


Illustrative Mathematics, geometry, unit 1, lesson 15, activity 1, Back to the Start Licensed under the Creative Commons Attribution 4.0 license,