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 [b]PERPENDICULAR LINES[/b]. [br][br][color=#c51414]Click the red checkbox to show/illustrate what it means for lines to be perpendicular[/color]. Then, move/drag points A & B around.[br][br]1) Complete the following sentence definition: [br] [b]Two lines are said to be PERPENDICULAR LINES if and only if _______________________________________________________[/b]. [br][br]Now, [color=#0a971e]click on the other green checkbox that appeared as well[/color]. Move points A & B around again. What do you notice? [br][br]2) Complete the following: [br] [b] If two lines graphed in the coordinate plane are PERPENDICULAR, then their slopes _________________________________________________. [/b]