Connect the dots

Draw nine dots on a piece of paper, as shown in the picture. Dots must be drawn as arranged in a square. Now you need to connect the dots using straight lines.

Read the following instructions.

You need to connect all nine dots using only four straight lines. You can't use more than four straight lines and also ensure to connect all nine dots using continuous four straight lines i.e. ensure that you connect the nine dots by drawing four straight lines without lifting your pencil once you begin. The next line begins after the first line ends.

Try it now! Tell us how did you do it? Did you face any constraints?