acute-angled triangle
- noun
- /əˈkjuːt ˈæŋɡəld ˈtraɪæŋɡəl/
- Specialized
:
triángulo acutángulo
- An acute-angled triangle has all its angles measuring less than 90 degrees.
Examples
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Likewise, triangles were classified generally as acute-angled triangles, right-angled triangles, and obtuse-angled triangles.
Blog text (29) -
In geometry class, we learned that an acute-angled triangle cannot have any angle that is a right angle.
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To construct an acute-angled triangle, make sure each corner measures below 90 degrees.
Synonyms
A triangle with all three angles less than 90 degrees
Surface Forms
Morphology
acute-angled + triangle
The adjective 'acute-angled' is compositional from 'acute' (angles less than 90°) and 'angled' (having angles), so when combined with 'triangle' the phrase straightforwardly denotes a triangle whose angles are all acute. This regular, cross-linguistically common modifier+noun structure makes the meaning directly inferable to a learner who knows the constituent words.
Etymology
The name acute-angled triangle gives a clear image: acute means 'sharp' or a small angle, angled shows we are talking about the corners, and triangle is a three-sided shape. So it describes a triangle whose three interior angles are each 'less than 90 degrees'.
