Charlotte is writing statements to prove that the sum of the measures of interior angles of triangle pqr is equal to 180o. line m is parallel to line n.. line n is parallel to line m. triangle pqr has vertex p on line n and vertices q and r on line m. angle qpr is 70 degrees. segment pq makes 35 degree angle with line n and segment pr makes 75 degree angle with line n.. which is a true statement she could write? . answer. angle prq measures 35o.. angle pqr measures 70o.. angle prq measures 70o.. angle prq measures 75o.