Answer:
Step I: Draw a number line and mark the center point as zero. Step II: Mark right side of the zero as (1) and the left side as (-1). Step III: We won't be considering (-1) for our purpose. Step IV: With 2 units as length draw a line from (1) such that it is perpendicular to the line.
Step-by-step explanation:
sana po makatulong
