喜樂美語
  1. 1

    Heptagonal is the describing word for a . If something is heptagonal, it has seven straight sides, or it is shaped like that seven-sided figure. So is the shape itself; heptagonal tells you what kind of thing you are looking at: a heptagonal coin, a heptagonal table. The gloss “a shape with seven straight sides” names the noun. The word in front of you is the adjective built from that noun. It is a maths and design word. In speech most people still say seven-sided.

    七邊形的

    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heptagon + -al (makes an adjective: of or like a heptagon). Used since the 16th century.

同家族的字

  • heptagonthe noun this adjective is built from
  • hexagonalsame pattern: the shape-name plus -al

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。

heptagonaladj/hɛpˈtæɡənəl/

  • 1

    Having seven angles and sides.

  • 2

    mathematicssciencesBelonging to the sequence generated by the formula (5n²-3n)/2.

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。