Q:
# What Is the Definition of "obtuse Triangle"?

**An obtuse triangle is any triangle that has an angle of more than 90 degrees.** This differs from an acute triangle, in which all three angles are less than 90 degrees, and a right triangle, in which one angle is exactly 90 degrees.

Since the sum of the angles of a triangle is always 180 degrees, no triangle can have more than one obtuse angle. Any obtuse angle between 90 and 178 degrees is possible. A 178-degree angle would product an obtuse isosceles triangle with two acute angles of 1 degree each. The word "obtuse," also used to refer to a slow-witted or insensitive person, derives from the Latin word "obtusus," meaning dulled or blunt.

Learn more about Shapes-
Q:
## Why Can't a Triangle Have More Than One Obtuse Angle?

A: An obtuse angle is more than 90 degrees. The three angles within any triangle always equal exactly 180 degrees. If two angles are obtuse — even if they are... Full Answer >Filed Under: -
Q:
## What Is the Definition of the "altitude of a Triangle"?

A: The altitude of a triangle is defined as the line drawn from the vertex of a triangle and perpendicular to the opposite side of the triangle. A triangle ha... Full Answer >Filed Under: -
Q:
## Why Do the Angles in a Triangle Add up to 180 Degrees?

A: The three interior angles of a triangle always add up to 180 degrees, which is one of the identifying characteristics of a triangle. Each shape has propert... Full Answer >Filed Under: -
Q:
## What Are Some Geometry Formulas for Triangles?

A: A triangle is a three-sided polygon where the sum of its interior angles equals 180 degrees. Some common formulas for triangles include perimeter, the tota... Full Answer >Filed Under: