| 单词 | rectangle |
|---|---|
| 音标 | ['rektæŋgl] |
| 解释 | n.长方形，矩形 |
| 红宝书 | 【英】 长方形,矩形(a flat shape with four straight sides forming four right angles) 【考】 diameter : circle / diagonal : rectangle(圆形的直径/矩形的 对角线)circumference : circle / perimeter : rectangle(圆周是圆的周长/周 长是矩形的周长) 【记】 rect（正，直）+angl e（角）→（四个角） 都是直角→矩形 |
| 字源 | rectangle (n.) 1570s, from Middle French rectangle (16c.) and directly from Late Latin rectangulum, from rect-, comb. form of Latin rectus "right" (see right (adj.1)) + Old French angle (see angle (n.)). Medieval Latin rectangulum meant "a triangle having a right angle." |
| 不择手段背单词 | n. 长方形; 矩形 【记】rect正, 直, angle(n 角)一四角都是直角－矩形 【类】diameter: circle = diagonal: rectangle圆形的直径 = 矩形的对角线circumference: circle = perimeter: rectangle圆周是圆的周长 = 周长是矩形的周长 |
| 趣味全助记 | 【记】rect直 + angle 角 直角 【相关】direct 直接，erect 竪直，correct 纠正 |
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