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Obtuse Triangle Definition

An obtuse triangle (or obtuse angled triangle) is a triangle in which one of the interior angles is an obtuse angle (greater than π2 radians or 90 degrees but less than π radians or 180 degrees). Obtuse triangles along with acute triangles are the two different types of oblique triangles (triangles that are not right triangles because they have no π2 radians or 90 degree angles).

Related Definitions

Sources

“Acute and Obtuse Triangles.” Wikipedia, Wikimedia Foundation, 13 Mar. 2020, en.wikipedia.org/wiki/Acute_and_obtuse_triangles.

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