How could you use the construction tool or compass and straightedge to create a line segment that's twice as long?

To create a line segment that's twice as long using a compass and straightedge, first draw the original line segment ( AB ). Next, extend the segment by marking a point ( C ) such that ( AC = AB ) using the compass to measure the length of ( AB ). Finally, draw a line from point ( A ) to point ( C ); the new segment ( AC ) will be twice the length of the original segment ( AB ).