To connect 9 dots with 4 lines, you must think outside the box. The key is to draw lines that extend beyond the boundaries of the dots. Start by drawing a line that goes through the first three dots in an L shape, then continue the line outside the dots to connect the remaining dots. This unconventional approach allows you to connect all 9 dots with just 4 lines.
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Yes. It can be done with as little as three, but you have to use your imagination. I assume you are talking about a 3 x 3 arrangement as in a tic tac toe grid. If you number them upper left to lower right,
o o o
o o o
o o o
1 2 3
4 5 6
7 8 9
Four lines: 1 to past 7, then though 8 and past 6, then through 3,2 and stop at 1, then though 5 and 9. The key is extending the lines past the grid.
Three lines: 7 through 4 and 1 at an angle. Extend the line until you can come down through 2, 5, and 8. Extend the line again until you can upswing through 9, 6 and 3. It will look like the letter N. As long as the dots are not points, this works.
It depends on where the dots are located.
. . . . . . . . . like this type only in 3 lines.
You need to extend the lines far beyond the box of dots. Your answer should look like a really tall and skinny N.
Put the dots in a general square outline. But make one side have 4 dots and the others have 3. Then go around the outline of the square.
This is a well known puzzle. The challenge is to draw through a 3x3 grid of 9 dots using only 4 connected straight lines. If we label the dots from top left to bottom right 1,2,3,4,5,6,7,8,9 then the explanation will be easier. The first line must go diagonally down and right from 1 to 9 then top on 9. The second line goes straight left from 9 to 7, and then continues on the rough length of another (imaginary) dot. The third line goes diagonally up and right through 4 and 2, and then continues the length of another imaginary dot. The final line goes straight down through 3 and 5.