What is the correct answer

Anton Gaenko asked Jun 2, 2023

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8 votes

Anton Gaenko asked Jun 2, 2023

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19 votes

1)
$m\angle A=76^(\circ)$ (given)

2)
$m\angle B=76^(\circ)$ (base angles theorem)

3)
$m\angle BCA=28^(\circ)$ (sum of angles in a triangle)

4)
$m\angle ECD=28^(\circ)$ (vertical angles)

5)
$m\angle DEC=90^(\circ)$ (perpendicular lines)

6)
$m\angle D=62^(\circ)$ (sum of angles in a triangle)

Jerri answered Jun 8, 2023

by Jerri

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