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

With the help of a compass, mark an arc below the line m.

Step-by-step explanation:

To draw a perpendicular from the point P to the line m, the first step should be mark and arc. Take a compass and place it on the point P and then mark a small arc right below the line m.

After you have marked an arc below the line m, take a straightedge and carefully join the point P to that arc and draw a line. This line should be perpendicular to line m such that intersecting point on the line makes a 90 degree angle with the line.

c. (3,2,6) is the answer.