柯林斯詞典parallelogram /?p?r??l?l??ɡr?m/ (parallelograms) 1. N-COUNT A parallelogram is a four-sided shape in which each side is parallel to the side opposite it. 平行四邊形 返回 parallelogram劍橋詞典a flat shape that has four sides . The two sets of opposite sides are parallel and of equal length to each other. 平行四邊形 返回 parallelogram