已知A={菱形},B={正方形},C={平行四边形},那么A、B、C之间的关系是

已知A={菱形},B={正方形},C={平行四边形},那么A、B、C之间的关系是_________.

答案

解析:正方形是菱形,菱形是平行四边形,所以BAC.

答案:BAC.

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