You see different objects in the world daily. All of these objects form some angle. If the angle is greater than 90° but less than 180°, then it is obtuse. In this article, we will explore 10 real-life examples of obtuse angles. So let’s start with the definition of an obtuse angle.
What is an obtuse angle?
An angle greater than 90° and less than 180° is called an obtuse angle.
For example, 130°, 145°, etc are the obtuse angles because they satisfy the definition of this angle.
You can read about the real-life examples of right angles.
Also, acute angle examples in real-life, as well as real-life examples of supplementary angles.
10 real-life Examples of Obtuse Angles
For a better understanding, you should know about the real-life examples of obtuse angles. It will help you in identifying the obtuse angles around you.
Here is the list of obtuse angle examples given below.
1. Widely open door:
When you open the door more than 90°, but not fully open. Then it forms an obtuse angle. You can also see it in the image for better visualization.
2. Scissors
When you open the scissors wider than usual, the angle between the blades of the scissors is an obtuse angle. So this is also a real-life example.
3. Ceiling fan
The angle between the arms of the fan forms an obtuse angle because it is greater than 90°.
4. Reclining chair
The angle between the backrest and the footrest is greater than 90° but less than 180°. So, according to the definition, this is also a real-life example of obtuse angles.
5. Clock hands
When the time is 4 o’clock or 5 o’clock, then the angle between the hour and minute hands is greater than 90 degrees, so it shows an obtuse angle. But it does not mean that at all other times the angle will be obtuse.
6. Hockey
Did you notice the shape of the hockey stick you use in daily life for playing? The angle at the curved end of the hockey stick is an obtuse angle. It means this is an example of an obtuse angle in sports.
7. Clothes hanger
The object that is used for hanging clothes also shows an obtuse angle because there is an angle that is less than 180° but greater than 90° between the two ends of it.
8. Opened laptop
When you open the laptop for normal use, it shows that the screen and keyboard surface form an angle greater than 90°, which is obtuse.
9. Pizza slices
The angle between the two or three combined slices forms an obtuse angle because it is greater than 90°.
10. Opened book
A student opens the book many times a day, but he has not yet noticed that the two surfaces of the book form an obtuse angle. So, a book is also a common real-life example of this angle.
Why are obtuse angles important?
- Obtuse angles are not only taught in geometry but are also used in many real-life applications.
- Obtuse angles help improve stability and design in many structures and objects.
- Engineers and architects use obtuse angles in various designs and structures.
- Obtuse angles can be found in many everyday objects and structures.
FAQs
Q1. What are the most common real-life examples of obtuse angles?
The most common examples of an obtuse angle are the open door and the clock we use daily many times.
Q2. Is 120° an obtuse angle?
Yes, because it is greater than 90° and less than 180°.
Q3. Do scissors form an obtuse angle?
Yes, when scissors are opened wider than 90°, they form an obtuse angle.
Q4. Is an obtuse angle used in architecture?
Yes, obtuse angles are used in architecture, like roof designs, road intersections, or building stability.
If you want more details on the topic of obtuse angles and their examples in real life, you can visit Wikipedia.
Conclusion:
These real-life examples of obtuse angles include pizza slices, reclining chairs, doors, books, laptops, and many other everyday objects. After learning these examples, you can easily identify the objects with obtuse angles around you.
