Question

find 'x' in the following question
​

Answer 1

Answer:

x=20

Step-by-step explanation:

AB=AO(Given)

So, Triangle ABO is an isosceles triangle

so, angle ABO=angle AOB( base angles of an isosceles triangles are equal)

angle AOB=3x+10Degrees

In triangle COD

CO=CD(given)

So, triangle COD is an isosceles triangle

angle AOB=angle COD(vertically opposite angles)

angle COD=3x+10 Degrees

angle COD=angle CDO(base angles of an isosceles triangles are equal)

So 2x+3x+10+3x+10=180 Degrees

So, on solving we get x= 20