Final answer:
Only one perpendicular line can be drawn through a point not on a given line.
Step-by-step explanation:
Through a point not on a given line, only one perpendicular line can be drawn to the given line.
To draw a perpendicular line, we need to find the line that passes through the given point and is perpendicular to the given line. This can be done by constructing a line that intersects the given line and is perpendicular to it at the point of intersection.
This means that there can be only one perpendicular line through a point not on the given line.