How do you connect 25dots using eight straight lines without lifting the pencil?

To connect 25 dots using eight straight lines without lifting the pencil, arrange the dots in a grid formation, such as a 5x5 square. Start from a corner dot, then draw lines that extend beyond the grid's boundaries to create overlapping lines that cross through multiple dots. The key is to think outside the box, literally, as some lines will need to extend beyond the confines of the square to effectively connect all the dots. This approach allows you to cover all the dots with the required number of lines.