Question

i want fast ergent
plz plz plz

Answer 1

your answer is ready

Answer 2

We can say that AOB is a line as angle AOC is 2x+10 i.e. [2x30]= 60+10= 70.

angleCOD is x+10 i.e. 30+10= 40. Angle BOD is 3x-20 i.e. [3x30]= 90-20= 70.

Therefore, Angles AOC+COD+BOD=AOB. i.e. 70+40+70= 180.Therefore, AOB is a line.