[中译] Puzzleup 2017 (16) Pattern with Triangles

楼主: LPH66 (-6.2598534e+18f)   2017-11-22 22:11:32
题目网址: http://www.puzzleup.com/2017/
http://www.puzzleup.com/2017/puzzle/?16
答题时限: 11月23日7PM-比赛结束(约12月27日)
加分时限: 11月23日7PM-11月28日6:59PM
答对可得基本分100分。答案可上传5次,每改1次答案从基本分扣20分。 
比赛期间内可随时上传答案,加分时限内答对第n天加(6-n)分       
另依题目的难易有额外加分(如有80%的人这题答错,答对者加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.
你在一个排成 3x3 共九个格点上画两个三角形。
* 三角形的所有顶点都要是这九个格点之一。
* 两个三角形不相交,也不在任何一点接触。
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.
试问依此规则一共可以有多少种画法?
* 旋转或翻转视为不同的画法。
* 题目的图片中展示了空格子和其中三种画法。
(图片: http://www.puzzleup.com/2017/img/puzzle/2017/16.jpg )

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