The figure below shows rectangle ABCD with diagonals segment AC and segment DB: A rectangle ABCD is shown with diagonals AC and
BD. Anastasia wrote the following proof to show that the diagonals of rectangle ABCD are congruent: Anastasia's proof: Statement 1: Rectangle ABCD is given Statement 2: segment AB ≅ segment DC because opposite sides of a rectangle are congruent Statement 3: segment AD ≅ segment AD by the reflexive property of congruence Statement 4: Statement 5: Angles BAD and ADC are congruent because all right angles are congruent Statement 6: Triangles BAD and CDA are congruent by SAS Statement 7: segment AC ≅ segment DB by CPCTC Which statement below completes Anastasia's proof? Angles BAD and ADC are 90 degrees (perpendicular lines create 90 degree angles) Angles BAD and ABC are 90 degrees (perpendicular lines create 90 degree angles) Angles BAD and ADC are both right angles (definition of a rectangle) Angles BAD and ABC are both right angles (definition of a rectangle)
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