喜樂美語
  1. 1

    A parallelogram is a flat four-sided shape. Each side is the same length as the side across from it, and those two sides run in the same direction — they would never meet, however far you drew them. The side-by-side pairs are parallel, which is the heart of the word. A is a parallelogram whose corners are all square; a is one whose four sides are all equal; a square is both. People meet the word in school maths and almost nowhere else in daily talk. It is a calm, exact classroom word, not a one. Though actually, once you leave the classroom, almost nobody says it: they say “that leaning box shape” or just “,” even when the corners are not square.

    平行四邊形

    例句逐字對照、搭配詞、易混淆字

    這一義的完整解析還沒打開。訂閱後可以看到例句怎麼拆、常跟哪些字一起出現， 以及容易跟它搞混的字。

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組成From Latin parallelogrammum, from Ancient Greek parállēlos (“parallel”) + grammḗ (“line”): a shape made of parallel lines.

同家族的字

  • parallelshares Greek parállēlos, “parallel, beside one another”

原始詞典資料2 筆記錄

以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。

parallelogramnoun/ˌpæ.ɹəˈlɛl.əˌɡɹæm/

  • 1

    geometrymathematicssciencesA convex quadrilateral in which each pair of opposite edges are parallel and of equal length.

    • Meronyms: angle, side; see also Thesaurus:polygon
  • 2

    datedeither of two rectangular areas (respectively the large parallelogram and the small parallelogram) abutting the goal line in front of the goal. (Since 1986 officially named the large rectangle and small rectangle, though the older names are still occasionally used.)

    • 2 Marking of ground — … A five yard square shall be marked in front of each goal, having the goal posts at adjacent angles. A five yards square shall be marked out in front of each point space, having a goal post and a point post at adjacent angles. There will be thus formed in front of scoring area a parallelogram fifteen yards by five yards.
    • Two parallelograms of the dimensions set out hereunder shall be formed in front of each scoring space. One parallelogram, 14 mts. by 4.5 mts. shall be formed by two lines 4.5 mts. long and at right angles to the end-line, being marked 3.80 mts. from each goal-post, and the ends of these lines being joined. A larger parallelogram 19 mts. by 13 mts. shall be formed by two lines 13 mts. long and at right angles to the end-line, being marked 6.4 mts. from each goal-post, and the ends of these lines being joined.

資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。