The steps below describe the construction of a line AG which is parallel to segment PQ and passes through a point A outside of PQ:  In the next step the width of the compass is adjusted to DE. Which statement is true? 

What dimensions can créate more than one triangle ?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

Solve the equation by completing the square. x^2+2x=17