Question

You are standing at the corner of River Street and Third Street. A friend calls and tells you to walk three blocks west of your present position to meet her. She is at the grocery store. What is the reference point for her direction?

Answer 1

The reference point for her direction is the corner of the streets you're at. She tells you to walk three blocks west. It is like if you were at 5 cm on the ruler and your friend tells you to go 3 cm to the west (like to the beginning of the ruler).

However, not to get lost, you need to clearly understand where the four cardinal directions (North, South, West, East) are.