oblique triangle

noun

1. any triangle that does not have a right angle ( right triangle ).

Example Sentences

It’s simple but contains his trademarks — a knit pattern made of oblique triangles in variations of milk chocolate brown and white to produce an Escher-like effect.

From Los Angeles Times

By division we may separate them into scalene, isosceles, and equilateral, or if we divide them according to a different principle into right and oblique triangles.

From Project Gutenberg