condition of parallel and perpendicular lines
- Author:
- Mathguru
We now see two perpendicular lines.
We can move the lines by clicking and moving points A or B. The lines will stay perpendicular.
Questions to think about
1. What do we observe about the slopes of the two lines?
2. Multiply the slopes together using a calculator. What do we get? Take approximate value.
3. If one of the lines is horizontal, then the other line is _________?
4. If one slope is 0, what is the other slope?