PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Linear pair:
Linear pair of angles should add up to 180°.
 
If the given two adjacent angles does not make the 180°, then it is not a linear pair.
10 Ресурс 1 (1).png
 
We studied that the sum of all the angles formed at a point on a straight line is 180°.
 
Think what would be the angle if many rays arises from a single point!
 
All the rays are starting from a single point. So the sum of the angles around a point will be 360°.
 
Now we understand this with some example.
 
Observe the below figure. Here AB is a straight line. And OC is a ray meeting AB at O. It is evident that AOC and BOC is a linear pairs, so it makes the angles of 180°.
 
11 Ресурс 2.png
 
Also the another ray OD meeting AB at O. Then AOD and BOD is a linear, which makes 180°.
 
We can observe that all the angles AOC, BOC, AOD and BOD are originated at the point of O.
 
Therefore, (AOC+BOC)+(AOD+BOD)=180°+180°=360°.
 
Hence, it is clear that the sum of the angles at a point will be 360°.