right_angle has definitions from the fields of mathematics,geometry
1
[ noun ] (mathematics,geometry) the 90 degree angle between two perpendicular lines

Used in print

(The Family Fallout Shelter. Office of Civil and Defence...)

The entrance must have at_least one right-angle turn .

Related terms

oblique_angle angle

2
[ noun ] a quarter of the circumference of a circle

Synonyms

quadrant

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