Suppose we have a map with North, South, East, West Map

13.jpg

If we move from

14.jpg

We have rotated ‘right angle’ in clockwise direction.

We see that

  We have rotated 1/4 of the full turn.

  So, right angle is 1/4 of the full rotation

 

If we go from

  East to South

15.jpg

We have rotated right angle in clockwise direction

 

Now, if we go from

  South to North clockwise

16.jpg

We have rotated 1/2 revolutions.

This is straight angle .

  2 right  angle = 1 straight angle

 

Similarly,

  If we go from East to West Clockwise

17.jpg

Then we have rotated 1/2 revolution

  i.e.  we have rotated

    1 straight angle

 

Suppose,

  We go from North to North

18.jpg

In this case,

  we have rotated 1 revolution

  ∴  we have rotated 1 full angle

Slide20.JPG

 

  1. Chapter 5 Class 6 Understanding Elementary Shapes
  2. Concept wise
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Transcript

In Summary, 1/4 revolution I.e. 1 right angle 1/2 revolution i.e. 2 right angle i.e. 1 straight angle 1 revolution i.e. 4 right angles i.e. 2 straight angles i.e. 1 full angle

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.