parallelogram
平行四辺形
parallelogon, generalisation encompassing hexagons as well as quadrilaterals
zonogon, generalisation to polygons with any even number of sides
Antiparallelogram
Levi-Civita parallelogramoid
/suto3/google.iconparallelogram
/suto3/Google画像検索.iconparallelogram
/suto3/Google定義検索.icon parallelogram
/suto3/wikipedia.iconparallelogram
/suto3/weblio.icon parallelogram
/suto3/kotobank.icon parallelogram
/suto3/jisho.icon parallelogram