SOLUTION: The table shows the proof of the theorem of the relation between slopes of parallel lines. What is the missing statement for step 5?

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Question 1067068: The table shows the proof of the theorem of the relation between slopes of parallel lines. What is the missing statement for step 5?

Answer by ikleyn(52855) About Me  (Show Source):
You can put this solution on YOUR website!
.
Which table ??