How do you draw a straight line with 9 dots?

How do you draw a straight line with 9 dots?

Try this now by quickly drawing nine dots on a piece of paper and have a go with a pencil. Place your pencil somewhere, draw four straight lines without taking your pencil off the page. Each line must start where the last line finished. Have a go now and then scroll down the page to find out the solution.

Can you connect the nine dots with just 4 straight lines?

The 9 Dots Problem One classical example is where nine dots are arranged on the sides and the center of a square as in the picture below. The problem is to connect the dots with no more than 4 straight lines without lifting your hand from the paper.

Each line starts where the last line finishes. Try this now by quickly drawing nine dots on a piece of paper and have a go with a pencil. Place your pencil somewhere, draw four straight lines without taking your pencil off the page. Each line must start where the last line finished.

What is the minimum number of straight lines to connect all the dots on this grid?

If so, what about 10? Just to be clear, you have to draw 11 lines that meet all dots.