The reason that completes the proof for step 6 is (a) Definition of median
How to complete step 6?
From the graph, point R' to be the midpoint of points M' and O'
Also, points P' and Q' are the midpoints of lines M'N' and N'O', respectively
This means that the three points are the median of the sides of the triangle
The line drawn through the three medians meet at point S
Hence, the reason that completes the proof for step 6 is (a) Definition of median
Read more about triangle median at:
https://brainly.com/question/2288141
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