Parallel Lines and Slope: Quick Investigation


In the applet below, please do the following: 1) Use the PARALLEL LINE Toolbar Image tool to construct a line through C parallel to line f. 2) Use the SLOPE Toolbar Image tool to measure and display the slopes of both lines. Please answer the question that appears below the applet.


Move points A, B, and C around. What do you notice about the slopes of these parallel lines? Describe.