Obtuse angle meaning

An obtuse angle is an angle that is greater than 90 degrees but less than 180 degrees.


Obtuse angle definitions

Word backwards esutbo elgna
Part of speech Noun
Syllabic division ob-tuse an-gle
Plural The plural of the word "obtuse angle" is "obtuse angles."
Total letters 11
Vogais (4) o,u,e,a
Consonants (6) b,t,s,n,g,l

An obtuse angle is a type of angle that measures between 90 and 180 degrees. In simpler terms, it is an angle that is larger than a right angle (90 degrees) but smaller than a straight angle (180 degrees). The term "obtuse" is derived from the Latin word "obtusus," which means "blunt" or "dull."

Characteristics of Obtuse Angles

Obtuse angles are characterized by their measurement falling within the range of 90 to 180 degrees. They are wider or "more open" than acute angles (less than 90 degrees) but not as wide or "fully open" as straight angles (exactly 180 degrees).

Examples of Obtuse Angles

Some common examples of obtuse angles include angles found in shapes like obtuse triangles, where one of the angles in the triangle is an obtuse angle. In everyday objects, obtuse angles can be seen in the hands of a clock at certain times of the day, such as 3:15 or 9:45.

Properties of Obtuse Angles

The properties of an obtuse angle include having one arm that points within the first or second quadrant of a Cartesian coordinate system. This means that the angle lies between 90 and 180 degrees when measured from the positive x-axis in a counterclockwise direction.

Understanding obtuse angles is essential in geometry and trigonometry, as they play a significant role in various mathematical calculations and designs. By recognizing and working with obtuse angles, individuals can better comprehend the relationships between different angles and shapes.


Obtuse angle Examples

  1. The roof formed an obtuse angle with the wall, creating a unique architectural feature.
  2. The two friends argued over the obtuse angle of the triangle they were trying to measure.
  3. In the painting, the artist deliberately depicted the tree branches at an obtuse angle to convey a sense of distortion.
  4. During the math class, the teacher explained how to identify an obtuse angle within a polygon.
  5. The doors of the old castle were positioned at an obtuse angle, creating a grand entrance for visitors.
  6. The detective noticed that the obtuse angle of the bullet hole indicated the direction from which the shot was fired.
  7. The kite flew high in the sky, its string forming an obtuse angle with the ground below.
  8. The hikers navigated through the forest, using the obtuse angle of the mountain peak as a point of reference.
  9. The artist's sculpture featured intersecting lines forming obtuse angles, creating a sense of depth and movement.
  10. The roof of the house was designed with an obtuse angle to allow for better drainage during heavy rainfall.


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  • Updated 27/03/2024 - 19:20:36