In the adjoining figure:(i) Is ∠1 adjacent to ∠2?(ii) Is ∠AOC ad

1.	In the adjoining figure:(i) Is ∠1 adjacent to ∠2?(ii) Is ∠AOC adjacent to ∠AOE?(iii) Do ∠COE and ∠EOD form a linear pair?(iv) Are ∠BOD and ∠DO A supplementary?(v) Is ∠1 vertically opposite to ∠4 ?(vi) What is the vertically opposite angle of ∠5?
Answer» (i) Yes, ∠1 is adjacent to ∠2 (ii) No, ∠AOC is not adjacent to ∠AOE. (iii) Yes, ∠COE and ∠EOD are linear pair. (iv) Yes, ∠BOD and ∠DOA are supplementary. (v) Yes, ∠1 is vertically opposite to ∠4. (vi) The vertically opposite angle of ∠5 is ∠2 + ∠3 ie., ∠COB. ∠COE + ∠EOB = ∠COB

In the adjoining figure:(i) Is ∠1 adjacent to ∠2?(ii) Is ∠AOC adjacent to ∠AOE?(iii) Do ∠COE and ∠EOD form a linear pair?(iv) Are ∠BOD and ∠DO A supplementary?(v) Is ∠1 vertically opposite to ∠4 ?(vi) What is the vertically opposite angle of ∠5?

Answer»

(i) Yes, ∠1 is adjacent to ∠2

(ii) No, ∠AOC is not adjacent to ∠AOE.

(iii) Yes, ∠COE and ∠EOD are linear pair.

(iv) Yes, ∠BOD and ∠DOA are supplementary.

(v) Yes, ∠1 is vertically opposite to ∠4.

(vi) The vertically opposite angle of ∠5 is ∠2
+ ∠3 ie., ∠COB.
∠COE + ∠EOB = ∠COB