Brain Teasers
Draw the Envelope
Below is a drawing of an envelope with the flap open.
Grab your pencil and paper and try to draw it yourself.
Rules:
Don't lift your pencil off the paper; the line must be continuous.
Don't go over any part of the line twice.
Don't cross the line.
Grab your pencil and paper and try to draw it yourself.
Rules:
Don't lift your pencil off the paper; the line must be continuous.
Don't go over any part of the line twice.
Don't cross the line.
Hint
Start in a corner with an odd number of lines.Answer
Follow the numbers 1, 2, ... 10.Hide Hint Show Hint Hide Answer Show Answer
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Comments
Wow! Now I see why it was in transition. I thought I had it figured out until I saw your answer. Good Job Marc!
Wow, really nice one! Have to think 'outside the envelope' so to say!
Enjoyed this one. Amazing - Good Job
I like these kind of teasers. Super job figuring a way to show us how to do it.
Easy, and fun.
was it supposed to be done using ten lines? cuz you could do it another way using fewer lines
I've seen this one before many times, so I got it right away. Still liked it, though.
An old childhood one that i still have to think about!
Had fun with this one. However, Im still trying to draw it myslef!!!
Is it just me or has everybody been forced to do this by some annoying class-mate at some point in their lives.
i had a much easier way of doing it... with only 8 lines
an absolute classic.
and you can't have 8 lines...remember you can't cross OVER a line.
I've done this countless times when I was young.
There's another way to do it without crossing the lines...You still use ten lines though.
why can't you do this?
.........2
........2..3
.......2.....3
.....2.........3
...2............3
..2444444443
1..5..............6
1....5........7..6
1.....5.....7....6
1.......5..7.....6
1........75......6
1.....7....5.....6
1...7.........5..6
178888888885
.........2
........2..3
.......2.....3
.....2.........3
...2............3
..2444444443
1..5..............6
1....5........7..6
1.....5.....7....6
1.......5..7.....6
1........75......6
1.....7....5.....6
1...7.........5..6
178888888885
Because of rule #3: Don't cross the line. Your line 5 crosses line 7.
i've seen it!
there are so many ways of doing this, i also only used 8 lines it is much easier that way!
Very easy. Oldest teaser.
Sep 03, 2006
i got one from a teacher like this, but it has four flaps, and u can cross lines...its like a box, with an X in it, and four flaps around it...i can't figure it out...andyone know what to do?
Very easy
I love it
Although i have done it many times before
Old one but a good one
Thanks
I love it
Although i have done it many times before
Old one but a good one
Thanks
That's a really good teaser, it made me think a while before I clicked the answer button.
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