Canadian Forces Aptitude Test (CFAT) Practice

What do you call a triangle with one angle greater than 90 degrees?

1. Acute triangle

2. Right triangle

3. Obtuse triangle

4. Equilateral triangle

The correct answer is: Obtuse triangle

A triangle with one angle greater than 90 degrees is classified as an obtuse triangle. In this type of triangle, the obtuse angle measures between 90 degrees and 180 degrees, while the other two angles must be acute, meaning they each measure less than 90 degrees. This characteristic distinguishes obtuse triangles from other types, such as acute triangles, where all angles are less than 90 degrees, and right triangles, where one angle is exactly 90 degrees. An equilateral triangle, on the other hand, features all sides and angles equal, specifically measuring 60 degrees each. Thus, the defining property of an obtuse triangle is the presence of that single angle exceeding 90 degrees.