PLEASE ANSWER FOR BRAINLIEST FIND THE MEASURE OF THE MISSING ANGLES

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Im literally having a mental breakdown

Manuela claims that and are congruent. which statement best describes her claim? she is incorrect because the segments do not have the same orientation. she is incorrect because the segments do not have the same length. she is correct because the segments have the same length. she is correct because the segments have the same orientation.