Which Theorem justifies this conclusion?

Given:
Measure of angle 1 + measure of angle 2 = 180º
Measure of angle 2 + measure of angle 3 = 180º

Conclusion:
angle 1 is congruent to angle 3

A)Congruent Supplements Theorem
B)Linear Pair Theorem
C)Definition of Supplementary Angles
D)Congruent Complements Theorem

Question

Which Theorem justifies this conclusion?

Given:
Measure of angle 1 +  measure of angle 2 = 180º
Measure of angle 2 +  measure of angle 3 = 180º

Conclusion:
      angle 1 is congruent to angle 3

A)Congruent Supplements Theorem
B)Linear Pair Theorem
C)Definition of Supplementary Angles
D)Congruent Complements Theorem

jdoe0001 · Answer

http://www.easynotecards.com/uploads/915/60/_5db751ae_1330d5e5031__8000_00000064.png

anonymous · Answer

Would it be A?

jdoe0001 · Answer

yes
if angle1 + angle2 = 180
then angle1 = $\bf \text{180 - angle2}$

if angle2 + angle3 = 180
then angle3 = $\bf \text{180 - angle2}$

anonymous · Answer

Oh okay I get it now thank you so much :)

jdoe0001 · Answer

yw