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Brain Teaser: 16 dots are arranged in 4 rows and 4 columns on a square grid.

What is the minimum number of straight lines needed to connect all the dots -- with the restriction that each new line must start at the end of the previous line, and no more than one new line can start at the end of a previous line? Hint: Lines can extend beyond the boundary of the figure.

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SidKemp profile image95

Best Answer Sid Kemp (SidKemp) says

3 years ago
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    TR Smith (calculus-geometry) 3 years ago

    Very clever!

xionnguyen profile image59

xionnguyen says

3 years ago
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  • SidKemp profile image

    Sid Kemp (SidKemp) 3 years ago

    Heck, just pile them up then squish them all into a 2-d plane! :) But then do you have only one dot?