Antonyms of noun right_triangle

1 sense of right triangle

Sense 1
right triangle, right-angled triangle -- (a triangle with one right angle)
       Antonym of oblique triangle (Sense 1)
      => oblique triangle -- (a triangle that contains no right angle)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun right_triangle

1 sense of right triangle

Sense 1
right triangle, right-angled triangle -- (a triangle with one right angle)
       => triangle, trigon, trilateral -- (a three-sided polygon)