| 单词 | diagonal |
|---|---|
| 音标 | [dai'ægənl] |
| 解释 | a.对角的；n.对角线 |
| 红宝书 | 【英】 对角的(crossing a straight-side figure, eg a rectangle, from corner to corner) 【考】 diameter : circle / diagonal : rectangle(直径是圆形内最长直 线/对角线是矩形内最 长直线) |
| 字源 | 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," related to gony "knee" (see knee (n.)). As a noun, from 1570s. |
| 不择手段背单词 | adj. 对角的; n 对角线 【记】dia, 2, gon角－2角之间的线－对角线 【类】diameter: circle = diagonal: rectangle直径是圆形内最长直线 = 对角线是矩形内最长直线 |
| 趣味全助记 | 【记】dia 通过，横过 + gon 角→对角 【相关】pentagon 五角大楼，polygon 多角形，trigon 三角形 |
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