The flow proof shows the statements that lead to the conclusion that a∥b

in the diagram. The reasons for each statement in the flow proof are missing. Identify the reasons for each of the 5 statements shown in the flow proof. In your response, label the steps a-e.
Given m<5=40, m<2=140
Prove a || b
a. m<5=40
b. m<2=140
c. <5 and <2 are supplementary angles
d. <5 and <2 are same side interior angles
e. a || b

1 answer

a. Given
b. Given
c. Definition of Supplementary Angles
d. Definition of Same Side Interior Angles
e. Converse of Alternate Interior Angles Theorem