Puzzleup 2017 (16) Pattern with Triangles - 拼圖
By Audriana
at 2017-11-22T22:11
at 2017-11-22T22:11
Table of Contents
題目網址: http://www.puzzleup.com/2017/
http://www.puzzleup.com/2017/puzzle/?16
答題時限: 11月23日7PM-比賽結束(約12月27日)
加分時限: 11月23日7PM-11月28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)
◆PATTERN WITH TRIANGLES
You will create a pattern by drawing two triangles on a 3x3 grid
with nine dots.
* All vertices of the triangles must be among the nine dots.
* The triangles won’t intersect and won’t touch not even at a point.
你在一個排成 3x3 共九個格點上畫兩個三角形。
* 三角形的所有頂點都要是這九個格點之一。
* 兩個三角形不相交,也不在任何一點接觸。
How many distinct patterns can be created by following these rules?
* Rotations or reflections of a pattern are considered distinct.
* The given image demonstrates the empty grid and three possible patterns.
試問依此規則一共可以有多少種畫法?
* 旋轉或翻轉視為不同的畫法。
* 題目的圖片中展示了空格子和其中三種畫法。
(圖片: http://www.puzzleup.com/2017/img/puzzle/2017/16.jpg )
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