Question

What postulate or theorem proves that the sum of the measures of the angle in the northeast corner of the intersection of Broadway and 21st Street and the angle in the southeast corner of the intersection of Broadway and 22nd Street is 180°?
Question 3 options:


Same-Side Interior Angles Theorem


Alternate Exterior Angles Theorem


Alternate Interior Angles Theorem


Corresponding Angles Postulate

Answer 1

Same side interior angles theorem, as it says angles on the same side of an interior angle are supplementary which means they both add up to 180 degrees and form a vertical angle.