Ziqi’s teacher loved puzzles, and posed a difficult challenge: “Draw five dots on a piece of paper. Now, connect each dot to every other dot. Each pair of dots needs to be connected by a line, which doesn’t need to be straight.”
Ziqi did this, and the picture looked like a star inside a pentagon:
The challenge continued: “Now, do the same again, only your lines can’t touch or cross over other lines or dots.”
Ziqi spent ages thinking about this challenge. It seemed impossible, but Ziqi came up with a solution! They cut a strip of paper, put a dab of glue on each end and made a little bridge on their page. Then the puzzle was possible.
Can you use one bridge to solve the puzzle too?
Try this challenge with a pencil and an eraser to undo mistakes. Draw as many lines as you can without making a crossing and then add in a bridge. Remember that the lines don’t need to be straight!
To finish this puzzle, you need to draw 10 lines.
- The first 7 lines are quite easy:
- The next 2 are a bit trickier:
- And the last line needs a bridge:
There are many other solutions to this puzzle, but they all need a bridge somewhere!
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