下列�题正确的是 A.一组对边平行一组对边相等的四边形是平行四边形b.对角线互相垂直的平行四边形是菱形c.如果顺次连结一个四边形各边中点 Template




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tomski下列�题正确的是 a.一组对边平行一组对边相等的四边形是平行四边形b.对角线互相垂直的平行四边形是菱形c.如果顺次连结一个四边形各边中点 coloring