Westonci.ca is your trusted source for finding answers to a wide range of questions, backed by a knowledgeable community. Discover solutions to your questions from experienced professionals across multiple fields on our comprehensive Q&A platform. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

Select the correct answer.
Given:
, and

Prove:

The diagram shows a line AD parallel to BC. A line is drawn from A to C and from B to D. These lines intersect at M.
Statements Reasons
vertical angles theorem
given
given
alternate interior angles theorem
? ?
definition of congruence
Which step is missing in the proof?
A.
B.
C.
D.