Jisho

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だいけい 台形
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Noun, Noun which may take the genitive case particle 'no'
1. trapezium; trapezoid​
Wikipedia definition
2. Trapezoid​In Euclidean geometry, a convex quadrilateral with at least one pair of parallel sides is referred to as a trapezoid in American English and as a trapezium in English outside North America. The parallel sides are called the bases of the trapezoid and the other two sides are called the legs or the lateral sides. A trapezoid with vertices ABCD is denoted 10px ABCD or ⏢ ABCD.
Read “Trapezoid” on English Wikipedia
Read “台形” on Japanese Wikipedia
Read “Trapezoid” on DBpedia

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