In the figure line AB ll line DE find measure of angle DRE and angle ARE using the given informationstep by step
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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°
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