<BAD is congruent to <CDA what proof is this?
Alternate Interior Angles are Congruent
Corresponding Angles are Congruent
Base Angles of an Isosceles Trapezoid are Congruent
Definition of parallel lines
Alternate Interior Angles are Congruent
Corresponding Angles are Congruent
Base Angles of an Isosceles Trapezoid are Congruent
Definition of parallel lines