However, for the lines to be parallel, the distance between the lines always stays the same. Perpendicular lines meet at a right angle. A right angle is a quarter turn, which is 90 degrees (90˚).

From stone circles to Mozart’s obsession with numbers and Zaha Hadid’s architecture influenced by mathematical logic and ...

Save guides, add subjects and pick up where you left off with your BBC account. An angle is the amount of turn between two lines. An angle is measured in degrees (°). Angles are a way of ...

Veteran defenceman realized it was time to hang up his skates after 14 NHL seasons, but hopes to stay with Habs in coaching or player-development position.