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| Math Central | Quandaries & Queries |
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Question from Vickie, a parent: Hello, Thanks for all your help in the past. My daughter had a question on her Week By Week about transformations and I can't remember what transformations will result in proportional figures. If a transformation looks like it is smaller what is that called? Also if the figure looks bigger what is that called? Thanks in advance for you help, Vickie |
Vickie,
Usually mathematicians don't distinguish, because the same mathematical techniques work for both cases! When we need to distinguish we might call one that made things smaller a "contractive transformation" or "contraction" and one that made things bigger an "expansive transformation" or "expansion".
Good Hunting!
-RD
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