What would you do if your teacher walked up to the blackboard and asked you to draw a square using only three lines? Most of us would freeze — after all, a square, by definition, needs four sides. Yet ...

Add Yahoo as a preferred source to see more of our stories on Google. Student after student came up to the board to make an attempt. One by one, they drew three lines, which of course did not add up ...

Today’s challenging puzzle is to draw a square and a rectangle to separate the squirrel from the nuts. So, if you think you're a genius with a sharp IQ, then draw a square and a rectangle to separate ...