What is the first step in the construction of a perpendicular line from point P to line m?

Measure the distance from point P to line m.
Use a straightedge to draw a perpendicular line to line m through point P.
Construct an arc that intersects line m at two points.
Add a point below line m and connect the points.

https://rialto5819-ehs-pps.gradpoint.com/Resource/2146263,72F,0,0,0,0,0/Assets/testitemimages/geometry_a/parallel_and_perpendicular_lines/mc155-1.jpg

Question

What is the first step in the construction of a perpendicular line from point P to line m?
 
   Measure the distance from point P to line m. 
 Use a straightedge to draw a perpendicular line to line m through point P. 
 Construct an arc that intersects line m at two points. 
 Add a point below line m and connect the points.

https://rialto5819-ehs-pps.gradpoint.com/Resource/2146263,72F,0,0,0,0,0/Assets/testitemimages/geometry_a/parallel_and_perpendicular_lines/mc155-1.jpg

anonymous · Answer

C