Question

If below fig, ∠AOF and ∠FOG form a linear pair.

∠EOB = ∠FOC = 90° and ∠DOC = ∠FOG = ∠AOB = 30° 

(i) Find the measures of ∠FOE, ∠COB and ∠DOE. 

(ii) Name all the right angles. 

(iii) Name three pairs of adjacent complementary angles. 

(iv) Name three pairs of adjacent supplementary angles. 

(v) Name three pairs of adjacent angles.

Answer 1

∠AOB + ∠BOC + ∠COD + ∠DOE + ∠EOF = 150^o

Now, also we have

(ii) Right angles are

(iii) Three pairs of adjacent complementary angles are

(iv) Three pairs of adjacent supplementary angles are

(v) Three pairs of adjacent angles