Most constructions are just done with a straight edge and a compass.
You would use the compass to measure the length of the segment. Just open the compass from one endpoint to the other. Then, you can use that to draw a congruent line segment.
To solve for w, you would take 9 and subtract that from the 69. after that you end up with 60=5w to find w, divide both sides by 5. 60 divided by 5 is 12, giving you your answer .
