diagonal

英 [da?'?g(?)n(?)l] 美[da?'?ɡ?nl]

近義詞crooked

暢通詞匯TEM8GRETOEFL低頻詞

復(fù)數(shù):?diagonals;副詞:?diagonally;

diagonal 對(duì)角線(xiàn)的

dia-, 穿過(guò)。-gon, 彎，角，詞源同knee, octagonal. 即穿過(guò)去的，成對(duì)角的。

diagonal: diagonal: [16] Diagonal is commonly used simply as a synonym for oblique, but in strict mathematical terms it denotes a line joining two non-adjacent angles of a polygon. This reveals far more clearly its origins. It comes from diagōnālis, a Latin adjective derived from Greek diagónios. This was a compound formed from the prefix dia- ‘a(chǎn)cross’ and gōníā ‘a(chǎn)ngle’ (as in English polygon), meaning ‘from angle to angle’. Gōníā is related ultimately to English knee and genuine.
=> genuine, knee, polygon
diagonal (adj.): 1540s (implied in diagonally), from Middle French diagonal, from Latin diagonalis, from diagonus "slanting line," from Greek diagonios "from angle to angle," from dia- "across" (see dia-) + gonia "angle" (see -gon). As a noun, from 1570s.

1. The book has a diagonal black stripe on the cover.: 書(shū)的封面上有條連接對(duì)角的黑斜線(xiàn).

2. Footsteps had scored a diagonal path through the snow.: 腳印在雪地上留下了一條對(duì)角線(xiàn).

3. Draw a diagonal line to divide the square into two triangles.: 畫(huà)一條對(duì)角線(xiàn),把正方形分成兩個(gè)三角形.