Question

In the figure aob is a straight line the measure of angle COD is equal to

Answer 1

Answer:

60°

Step-by-step explanation:

AOB is a straight line 

∴∠AOC+∠COD+∠DOB=180∘

⇒x+20∘+2x−20∘+60∘=180∘

⇒3x=120∘

⇒x=40∘

∠COD=2x−20∘=(2×40∘)−20∘=60∘