HELPPPP FAN& MEDAL!!!!!!!!!

Brandon uses the following steps to construct a perpendicular line through a point C on a line segment. He first draws two arcs from point C intersecting the line segment in points A and B. The next four steps are listed below:

Step 1: Using the same compass width draw two more arcs from point C, one above and the other below the line.
Step 2: Without changing the compass width, draw two arcs from point B above and below the line segment.
Step 3: Label the point of intersection of the arcs above the line segment as M and below the line as N

Question

HELPPPP FAN& MEDAL!!!!!!!!!

Brandon uses the following steps to construct a perpendicular line through a point C on a line segment. He first draws two arcs from point C intersecting the line segment in points A and B. The next four steps are listed below:

Step 1: Using the same compass width draw two more arcs from point C, one above and the other below the line.
Step 2: Without changing the compass width, draw two arcs from point B above and below the line segment.
Step 3: Label the point of intersection of the arcs above the line segment as M and below the line as N

anonymous · Answer

Part A: Which is the first incorrect step?
Part B: Using complete sentences, explain your answer for Part A.
Part C: Explain why a compass works for the construction done by Brandon.

phi · Answer

compare to http://www.mathopenref.com/constperplinepoint.html

anonymous · Answer

@phi @Michele_Laino @camerondoherty 

can u help me please!!!

camerondoherty · Answer

Use what @phi provided

anonymous · Answer

so I could use that? @phi

phi · Answer

It shows the steps.  So compare the steps to the instructions they give in your problem.