Question

solve ------------ only genius

Answer 1

Answer:

130

Step-by-step explanation

AO is parallel to CD, OB is a Transversal

angle AOB = ANGLE CDB(Corresponding angles)

so,angle CDB=50 degrees

and,

OB is parallel to CE and CD is Transversal,

so

<CDB + <ECD=180

50+<ECD+180

<ECD=180-50=130