Follow the steps below to copy segment [i]AB[/i]:[br][br]1. Use the line tool to construct line [i]m[/i] below segment [i]AB[/i][br][br]2. Use the point tool to construct point [i]E[/i] on line [i]m[/i]. Right click on the point to show its label.[br][br]3. Use the Compass tool to measure the length of segment [i]AB[/i], then click on Point [i]E[/i] to center the Compass tool at that point. [br][br]4. Construct Point [i]F[/i] at an intersection of line [i]m[/i] and the circle you just constructed.[br][br]5. Hide everything in your sketch (right-click, Show Object) [b]except[/b] for Points [i]A[/i], [i]B[/i], [i]E[/i] and [i]F[/i] and segment [i]AB[/i]. [br][br]6. Use the Segment tool to construct segment [i]EF[/i]. [br][br]7. Drag things around in your sketch and observe what happens.