Matchstick Puzzler: 16 – 90 Degree Angles by Dan Posted on October 6, 2012 New puzzler from Cartalk: How do you make 16 ninety-degree angles out of 4 matchsticks? Visit the Cartalk site for the full text and a hint(?). Share this:TwitterFacebook This entry was posted in interesting stuff and tagged Cartalk, puzzler. Bookmark the permalink.
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