[中譯] Puzzleup 2021 (1) EQUILATERAL TRIANGLES

看板puzzle (益智遊戲 - 數獨,拼圖,推理,西洋棋)作者LPH66 ( )時間3年前 (2021/09/03 08:29)推噓0(0推 0噓 1→)

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題目網址: https://www.puzzleup.com/2021/ https://www.puzzleup.com/2021/puzzle/?1 答題時限: ９月２日７ＰＭ－比賽結束（約11月９日）加分時限: ９月２日７ＰＭ－９月７日６：５９ＰＭ答對可得基本分１００分。答案可上傳５次，每改１次答案從基本分扣２０分。　比賽期間內可隨時上傳答案，加分時限內答對第ｎ天加（６－ｎ）分　　　　　另依題目的難易有額外加分（如有８０％的人這題答錯，答對者加８０分）　　 ◆EQUILATERAL TRIANGLES https://www.puzzleup.com/2021/img/puzzle/2021/01.jpg

How many equilateral triangles can be obtained by joining 19 points shown in the figure? -All pairs of points are equidistant. -Three possible triangles are drawn as an example. https://www.puzzleup.com/2021/img/puzzle/2021/01s.jpg

圖中的 19 個點互相連結可以得出多少個正三角形？ - 每對相鄰的點距離都相等。 - 其中的三種畫法如上圖所示。 -- 'You've sort of made up for it tonight,' said Harry. 'Getting the sword. Finishing the Horcrux. Saving my life.' 'That makes me sound a lot cooler then I was,' Ron mumbled. 'Stuff like that always sounds cooler then it really was,' said Harry. 'I've been trying to tell you that for years.' -- Harry Potter and the Deathly Hollows, P.308 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 180.177.0.237 (臺灣) ※ 文章網址: https://www.ptt.cc/bbs/puzzle/M.1630628950.A.909.html ※ 編輯: LPH66 (180.177.0.237 臺灣), 09/03/2021 08:29:30