Question

plz see the questionin the picture​

Answer 1

Answer:

<ade=70  (alt. int. angles)

in triangle dre

70+40+<dre=180    (asp)

=> <dre=70

<dre+<are=180    (linear pair)

=> <are= 110

hope this clarifys your doubt

Answer 2

Answer:

AB||DE,AD is a transversal

angle BAD= angle ADE=70°(alternate interior angle)

angle RDE+angle DER=angle ARE(exterior angle property)

70°+40°=110°

therefore, angle ARE=110°

angle ARE+angle DRE=180°(linear pair)

110°+angle DRE=180°

angle DRE=180°-110°=70°