Which type of triangle has one angle greater than 90 degrees?

Which type of triangle has one angle greater than 90 degrees?

• A. Acute triangle
• B. Obtuse triangle
• C. Equilateral triangle
• D. Right triangle

Answer: (B)

An obtuse triangle is defined as having one angle that is greater than 90 degrees. This specific property sets it apart from other types of triangles. In contrast, an acute triangle has all three angles measuring less than 90 degrees, while a right triangle has one angle that is exactly 90 degrees. An equilateral triangle has all three angles equal to 60 degrees, and therefore cannot possess an angle greater than 90 degrees. Thus, the distinguishing feature of an obtuse triangle is the presence of that one angle exceeding 90 degrees, which confirms that the correct answer is indeed the obtuse triangle.

An obtuse triangle is defined as having one angle that is greater than 90 degrees. This specific property sets it apart from other types of triangles.

In contrast, an acute triangle has all three angles measuring less than 90 degrees, while a right triangle has one angle that is exactly 90 degrees. An equilateral triangle has all three angles equal to 60 degrees, and therefore cannot possess an angle greater than 90 degrees.

Thus, the distinguishing feature of an obtuse triangle is the presence of that one angle exceeding 90 degrees, which confirms that the correct answer is indeed the obtuse triangle.