2
1
3
4
The statement “Angle 2 is congruent
to angle 4" is justified by the
a
b
Alternate Interior Angles Theorem
Definition of Linear Pair
Vertical Angles Theorem
Definition Corresponding Angles.

2 1 3 4 The statement Angle 2 is congruent to angle 4 is justified by the a b Alternate Interior Angles Theorem Definition of Linear Pair Vertical Angles Theore class=