Sikes clenched his teeth; took one look around; threw over the prostrate form of Oliver, the cape in which he had been hurriedly muffled; ran along the front of the hedge, as if to distract the attention of those behind, from the spot where the boy lay; paused, for a second, before another hedge which met it at right angles; and whirling his pistol high into the air, cleared it at a bound, and was gone.
There are no more uses of "right angle" in the book.
Show samples from other sources
The lines intersect at right angles.
He walked slowly toward the truck, his eyes on me the whole way, black beret tilted at exactly the right angle on his head.
Laurie Halse Anderson -- The Impossible Knife of Memory