Their houses are very ill built, the walls bevil, without one right angle in any apartment; and this defect arises from the contempt they bear to practical geometry, which they despise as vulgar and mechanic; those instructions they give being too refined for the intellects of their workmen, which occasions perpetual mistakes.
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