The indigenous "supplementary" originates from two Latin words "Supplere" and "Plere" whereby "Supplere" method "supply”, vice versa, "Plere" method "fill". So, "supplementary" way "something as soon as supplied to finish a thing". And also so are supplementary angles, a pair of two angles developing a straight angle (180 degrees) once they are placed together. These two angles are certainly called supplements of every other.

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Measuring angles and finding angles space the most frequently carried out actions in Geometry. However, in bespeak to do so, you require to have actually your geometrical ideas in place. In this lesson, us will discover the people of supplementary angle, i m sorry holds an essential application in solving assorted geometry problems. The journey will take us with supplementary angles, and also the difference in between supplementary angle v/s security angles.

1.What are Supplementary Angles?
2.Adjacent and also Non-Adjacent Supplementary Angles
3.Supplementary V/S safety Angles
4.How to find the supplement of one Angle?
5.FAQs top top Supplementary Angles

What space Supplementary Angles?

Two angle are said to be supplementary angle if they include up to 180 degrees. Supplementary angles type a straight angle (180 degrees) when they are put together. In other words, edge 1 and angle 2 are supplementary, if angle 1 + edge 2 = 180o

In this case, edge 1 and also Angle 2 are called "supplements" of every other. In the below figure, 130o + 50o = 180o.Hence, through the definition of supplementary angles, these two angles space supplementary.


Adjacent and also Non-Adjacent Supplementary Angles

Supplementary angles have the right to either be surrounding or non-adjacent. So, there space two species of supplementary angles. Every of these species of supplementary angles are explained below.

Adjacent supplementary anglesNon-adjacent supplementary angles

Adjacent Supplementary Angles

Two supplementary angles through a usual vertex and also a usual arm are claimed to be adjacent supplementary angles.



Here, ∠COB and ∠AOB are nearby angles as they have actually a usual vertex, O, and also a typical arm OB. Castle also add up come 180 degrees, the is, ∠COB + ∠ AOB = 70o + 110o = 180o. Hence, these two angles are surrounding supplementary angles.

Non-adjacent Supplementary Angles

Two supplementary angles that room NOT nearby are said to it is in non-adjacent supplementary angles.



Here, ∠ABC and ∠PQR room non-adjacent angles as lock neither have a usual vertex nor a usual arm. They also add up to 180 degrees, the is, ∠ABC+ ∠PQR = 79o + 101o = 180o. Hence, these two angles are non-adjacent supplementary angles. Non-adjacent supplementary angles, once put together, form a directly angle.

Supplementary V/S security Angles

The supplementary and complementary angles room angles that exist in pairs, summing approximately 180 and 90 degrees, and have countless real-time applications, most usual being the crossroads. Let's have a look at the difference between them.

The supplementary vs complementary angle table.

Complementary Angles

Supplementary Angles

Two angles are stated to be complementary if they add up to 90 degrees.

Two angles are claimed to it is in supplementary if they add up to 180 degrees.

Complement that an angle x is (90 - x)o

Supplement of an angle x is (180 - x)o

Here is a quick trick for you to know the difference in between supplementary angles and complementary angles.

"S" is for "Supplementary" and "S" is because that "Straight." Hence, you have the right to remember that 2 "Supplementary" angles once put together type a "Straight" angle."C" is because that "Complementary" and also "C" is for "Corner." Hence, you can remember that 2 "Complementary" angles when put together kind a "Corner (right)" angle.

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How to find the supplement of an Angle?

When the amount of 2 pairs of angle is same to 180°, climate we contact that pair the angles, additionally of each other. So, we understand that the sum of two supplementary angle is 180 degrees, and each of lock is stated to it is in a "supplement" that the other. Thus, the supplement of an edge is found by subtracting it indigenous 180 degrees. This means the supplement of x° is (180 - x)°

For example, the supplement of 77° is derived by subtracting it from 180o. Thus, its supplement is (180-77)° = 103°.