Antonyms of adj right-angled

1 sense of right-angled

Sense 1
right-angled -- (forming a right angle or containing one or more right angles; "a right-angled bend")

INDIRECT (VIA square) -> round, circular -- (having a circular shape)

Similarity of adj right-angled

1 sense of right-angled

Sense 1
right-angled -- (forming a right angle or containing one or more right angles; "a right-angled bend")
       => square (vs. round) -- (having four equal sides and four right angles or forming a right angle; "a square peg in a round hole"; "a square corner")