1. The problem asks: What are perpendicular lines and can we draw them? 2. Perpendicular lines are two lines that intersect at a right angle, which means they meet at an angle of 90 degrees. 3. In coordinate geometry, if one line has slope $m$, then a line perpendicular to it has slope $-\frac{1}{m}$, provided $m \neq 0$. 4. This means the product of the slopes of two perpendicular lines is $-1$: $$m_1 \times m_2 = -1$$ 5. For example, if a line has slope 2, a line perpendicular to it will have slope $-\frac{1}{2}$. 6. Here is a simple drawing of two perpendicular lines intersecting at point O, forming a right angle.