Prove that ADAB ABCD.
A
D
C
Statement
1 LALC
2
Pick statement
3 AB | CD
LABD LCDB
B
Reason
Given
They are lengths of the same segment.
Given
When a transversal crosses parallel lines,
Pick type of angle.pair
angles are congruent.
5 ADAB ABCD
Pick congruence criterion
congruence
St