Retweeted じゃがりきん (@jagarikin):
回転するペンローズの三角形は常に頂点が13芒星の上にあります pic.twitter.com/kM5yMXWCJR http://fb.me/1YqZN4mTf
3:27 AM - 12 Jun 2017
0 replies
8 retweets
15 likes
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