Question

9. Fill in the blanks with respect to the
following figure:
D
(1) ZAOC =
(3) BOD =
(2) COB =​

Answer 1

Answer:

i) AOC = 155, COB= 25, BOD = 155

Step-by-step explanation:

i) for finding angle AOC:

take 180- 25 = 155 degrees

ii) angle COB:

VERTICALLY opposite angles

so it is 25 degrees

iii) angle BOD:

180- 25= 155 degrees

Answer 2

∠AOD= 25°[ given]

1) ∠AOC=?

∠AOC+∠AOD=180°

∠AOC+25°= 180°

∠AOC= 180°-25°

∠AOC=155°

2) ∠COB=?

∠COB+∠AOC= 180°

∠COB+ 155°= 180°

∠COB=180°-55°

∠COB=125°

3)∠BOD=?

∠BOD+∠COB=180°

∠BOD+ 125°=180°

∠BOD= 180°-125

∠BOD= 55°