Question

Please help it's urgent
class 9th
Don't even try to post irrevalent answers otherwise your 10 answers will be deleted​

Answer 1

Answer:

The answer is 80°

Step-by-step explanation:

Angle CBE= Angle ADC (exterior angle= opposite interior angle)

then,

Angle ADC+ angle ABC= 180°

angle ABC = 180°-100°

= 80°

so

Angle ABC= Angle CDF

80°