Final answer:
To complete the proof, we need to use the given information to show that the measure of angle m is equal to 146 degrees.
Step-by-step explanation:
To complete the proof, we need to use the given information to show that the measure of angle m is equal to 146 degrees.
Since the first two statements in Eq. A.5 state that 1 is equal to 1 and 3 is less than 1, we can conclude that their sum must be less than 1. Therefore, m < 1 = 146.
Example: If angle m measures 90 degrees and angle n measures 56 degrees, then m < 1 = m + n = 90 + 56 = 146.