The Total solution for NCERT class 6-12
In the belowfigure, write all pairs of adjacent angles and all the linear pairs.
From figure, pairs of adjacent angles are :
(∠AOC, ∠COB) ; (∠AOD, ∠BOD) ;(∠AOD, ∠COD) ; (∠BOC, ∠COD)
And Linear pair of angles are (∠AOD, ∠BOD)and (∠AOC, ∠BOC).
[As ∠AOD + ∠BOD = 1800 and ∠AOC+ ∠BOC = 1800.]