Understanding Supplementary Angles and Other Angles

Mathematics is very vast. Its concepts have real-life implications which makes it necessary to be well aware of all the concepts of mathematics. Angles are a very important aspect of mathematics and are widely present throughout mathematics.

The angle between two lines is something one can hear very often. Angle means the degree to which two lines are away from each other. This concept is usually studied in geometry concerning figures like triangles, squares, pentagons, or any other form of the figure. There are many types of angles like supplementary angles, obtuse angles, etc.

Use of angles in real life-

 Designers use point estimations to develop structures, spans, houses, landmarks, and so forth. When a house or any other structure is designed, proper angles are ensured. Every step in construction involves checking angles and accordingly draw.


 Woodworkers use point estimating gadgets like protractors, to make furniture like seats, tables, beds, and so forth. It is noticed that chairs, tables, doors, etc are appropriately angled. They are all aligned. This is with the help of angles only that symmetry in woodwork is achieved.


 In clocks also, the arms are angled perfectly to ensure that they show the right time. Thus, even in the clock, the angles are used.


 While learning some classical dance, it is very important to ensure that their postures are in certain angles. The trainers teach students to maintain a certain angle to get the perfect posture.


 Food items like a piece of cake, a cut of pizza, nacho chips all form an angle. Letters in alphabets have points, for instance, letter V makes an intense angle, letter L makes a right angle.


 The positioning of the ladder against a wall is decided by keeping them at the optimum angle. Similarly, stairs when made in a house are made at an angle that is neither too steep nor too flat.


 Chopping board which is frequently used in the kitchens is also made at an optimum angle. The blade is fixed at an appropriate angle.


 Crossroads are also made at an angle that is neither too extreme nor too straight. Building bridges, their alleviation, etc is done at an appropriate angle. The height of a building is also decided by the appropriate angle.

Thus, almost everything around us is fixed at an optimum angle, and in their construction or making, angles play a major role. Thus, it is important to know about the angles, their types, and their applications so that one can use them to their advantage.

Types of angles-

  Supplementary angles-

When the sum of two angles equals to be 180 degrees, they are known as supplementary angles. The two angles can be a sum of acute or obtuse, or two right angles, etc. the only condition for the two angles to be supplementary is that their sum should be equal to 180 degrees.

  Complementary angles-

When the sum of two angles comes out to be 90 degrees, they are said to be complementary. The two angles will be acute only, otherwise, the sum would exceed 90 degrees. Thus, the only condition for two angles to be complementary is that their sum should be equal to 90 degrees.

  Acute angle-

The acute angle is formed when the angle between two lines is between 0 degrees or 90 degrees. Any angle between these two will be known as an acute angle.

There are many other types of angles classified based on rotation, direction, or the value of the angle. For more understanding of angles and how they are calculated, one can practice questions on various math websites like Cuemath, etc. Or one can also watch videos and tutorials on YouTube where with images they can be properly understood. There is the use of angles in real life too, thus, parents should ensure that they properly teach their children about angles and their applications. 

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