Jisho

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図形相似
Wikipedia definition
1. Similarity (geometry)Two geometrical objects are called similar if they both have the same shape, or one has the same shape as the mirror image of the other. More precisely, one can be obtained from the other by uniformly scaling (enlarging or shrinking), possibly with additional translation, rotation and reflection. This means that either object can be rescaled, repositioned, and reflected, so as to coincide precisely with the other object.
Read “Similarity (geometry)” on English Wikipedia
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Read “Similarity (geometry)” on DBpedia

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