Parallels & Perpendiculars: Ex. 7
- Tim Brzezinski
In the applet below, please do the following: 1) Use the PARALLEL LINE tool to construct a line through C parallel to line f. 2) Use the SLOPE tool to measure and display the slopes of both lines. (They should be equal.) 3) If you want to see a grid, right-click and select "Show Grid" (or select the Grid option in upper right). 4) Use the PERPENDICULAR LINE tool to construct a line through D that's perpendicular to f. 5) Plot the point of intersection of line f and the line you just constructed in (4). 6) Verify the measure of the angle at which line f and the line you constructed in (4) = . When you're done (or if you're unsure of something) feel free to check by watching the brief silent screencast below the applet.