the.com/right angle
The one angle everyone agrees on, which is exactly why corners trust it.
means The 90-degree angle formed when two lines meet exactly perpendicular to each other, like the corner of a square.
from From Latin angulus rectus — 'rectus' meaning 'straight' or 'upright,' the same root that gives us 'rectitude' and 'correct.' The Romans used it in the sense of a line standing truly upright against another, not leaning — so a 'right' angle was literally the 'upright' one, the standard against which a leaning, oblique angle could be judged wrong.
- definition
- exactly 90 degrees, no negotiation
- etymology
- latin angulus rectus means upright angle
- test
- forms a perfect square corner, check with paper
- everywhere
- books, screens, buildings all depend on it