Based on the steps described:
- Step 1 describes a pencil above a horizontal line segment with its tip pointing left, which suggests a possible angle or direction.
- Step 2 describes a slanted line intersecting a horizontal line segment at a specific point, indicating that an angle may be created.
- Step 3 continues describing the intersecting lines with the slanted line extending indefinitely, reinforcing the idea of an angle.
- Step 4 introduces arcs, typically used in constructions involving bisectors.
The construction of arcs suggests that the process being described is related to bisecting an angle. Therefore, the most fitting answer is:
angle bisector