[image]

Conclusion:   [image]

Reason:  Vertical Angles are Congruent

Conclusion:   [image]

Reason:   Two angles complementary to the same (or congruent) angles are congruent to each other

Conclusion: AB = MB

Reason: Definition of midpoint

Conclusion:   AB + BC = AC

Reason:   Segment Addition Postulate (SAP)

Conclusion:   [image]

Reason:   Two angles supplementary to the same (or congruent) angles are congruent to each other.

Conclusion:  [image]

Reason:  Linear Pairs are Supplementary