If a street runs east–west, how does the quadrant notation influence where the 100 and 200 blocks lie?

• A. It determines which blocks are north or south of the street.
• B. The quadrant indicates which half of the grid (NE/ SE vs NW/SW) the blocks are located along that street.
• C. It changes the block numbering to 50s.
• D. It decides the block's distance from the baseline.

Answer: (B)

Quadrant notation divides the city grid into four quarters relative to a north–south baseline and the street you’re looking at. When a street runs east–west, the blocks along that street fall into either the eastern half of the grid (the NE/SE quadrants) or the western half (the NW/SW quadrants), depending on whether you’re east or west of the north–south baseline. That means the 100-blocks and 200-blocks along that east–west street are positioned in one of those halves, not simply defined as north or south of the street itself. The important point is which half of the grid you’re in, because that determines whether those blocks lie in the NE/SE side or the NW/SW side. The quadrant doesn’t change the numbering to 50s, nor does it specify distance from the baseline beyond indicating the half of the grid you’re in.