四辺形 しへんけい Meanings Noun quadrilateral; quadrangle; tetragon Kanji 四 four. Read as シ. 辺 vicinity. Read as ヘン. 形 shape. Read as ケイ. Words containing 四辺形 平行四辺形 (へいこうしへんけい) parallelogram 四辺形格子 (しへんけいこうし) quadrilateral mesh 力の平行四辺形 (ちからのへいこうしへんけい) parallelogram of force And 1 more. Word lists Geometry Jinuma: Japanese Dictionary · Word lists