Question

please answer me the question.​

Answer 1

Answer:

a =50 degrees

This will be the answer for this question

Answer 2

Answer:

(a)

since AB||DE

angle(CDE)=angle(CAB)

so angle(CDE)=70°

since ADC is straight line

angle(ADE)+angle(CDE)=180°

angle(ADE)+70°=180°

angle(ADE)=110°

(b)

sum of angles in a triangle =180°

in ∆CDE

50°+70°+angle(ECD)=180°

angle(ECD)=60°

IN ∆ABC

70°+60°+angle(ABC)=180°

angle(ABC)=50°

Hence angles are found.