acute-angled triangle


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Noun1.acute-angled triangle - a triangle whose interior angles are all acuteacute-angled triangle - a triangle whose interior angles are all acute
triangle, trigon, trilateral - a three-sided polygon
References in periodicals archive ?
If all the angles of a triangle are less than 90[degrees], it is naturally called an acute-angled triangle.
The shape of the Circinus constellation resembles a long, acute-angled triangle with Alpha Circini pointing SW Beta and Gamma Circini completes the shape of the image, approximately 7 degrees NW.