Perpendicular Lines Definition (& Consequence)
- Author:
- Tim Brzezinski
In the applet below, the line that passes through points A & B and the line that passes through points A & C are said to be PERPENDICULAR LINES.
Click the red checkbox to show/illustrate what it means for lines to be perpendicular. Then, move/drag points A & B around.
1) Complete the following sentence definition:
Two lines are said to be PERPENDICULAR LINES if and only if _______________________________________________________.
Now, click on the other green checkbox that appeared as well. Move points A & B around again. What do you notice?
2) Complete the following:
If two lines graphed in the coordinate plane are PERPENDICULAR, then their slopes _________________________________________________.