The correct preposition that you should add to make the sentence correct is TO. The answer is then "To facilitate a quick getaway, the cunning thief parked the car perpendicular to the building". Perpendicular things always have the preposition TO next to them.
My motion speed is my mom's average speed going in one straight direction. Distance that we travel are divided by our velocity which = Our total time going at i<span>nstantaneous speed.</span>
<span>August Boatwright is a character in The Secret Life of Bees. </span>