explementary angle

Which is lucky: we can see the gaps in the disk more clearly than if the disk were at a steeper angle.

In the centre of many of the rooms there played a small fountain; in others there were four, one in each angle.

The rest is done by cutting away two upper and four under-teeth, and substituting false ones at the desired angle.

For the entire matter then turned over in his mind, so that he saw it from a new angle suddenly.

He aimed at the yawning hippopotamus and fired, hitting it on the skull, but at such an angle that the ball glanced off.

Take a case in Trigonometry—a Complement is what remains after subtracting an angle from one right-angle.