angle has 6 distinct synonyms spread across 4 of its 8 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
move or proceed at an angle
“he angled his way into the room”
the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians
a member of a Germanic people who conquered England and merged with the Saxons and Jutes to become Anglo-Saxons
Synonyms, antonyms and the broader and narrower relations for angle come from Princeton University’s WordNet. Full sources and licences.