Rotational symmetry means that if you turn something through a fixed angle, it looks the same (as a starfish would if you turned it through a fifth of a circle).

ECONOMIST: Particle physics makes sense, but it assumes too much

That, in turn, depended on the angle and amount of sunlight falling on Voyager, and the amount of heat generated by its various components as they were switched on and off.

ECONOMIST: The long arm of the celestial repairman

Bullet trajectories show that Pistorius had to turn left and fire at an angle to aim at the toilet, Botha testified.

CNN: STORY HIGHLIGHTS

He made a turn into a street at a right angle to the one we were on.

NEWYORKER: Midnight in Dostoevsky

Charlton's best chance in a fairly tame first half came on the half-hour mark when Nicky Forster's flick-on was met by Deon Burton's ferocious volley from a tight angle but Shane Higgs made a reflex save to turn it past the post.

BBC: Sport - Football - Charlton 1-0 Leeds United