藝術與建築詞典根目錄
....關聯概念層面
........關聯概念
............<科學概念>
................<數學概念>
....................<幾何概念>
........................幾何圖形 (幾何概念)
............................平面圖形
................................多邊形 (平面圖形)
....................................四邊形
........................................平行四邊形
............................................矩形
|||................................................正方形 (矩形)
|||............................................菱形 (平行四邊形)