Q.2. (Street Plan): A city has two main roads which cross each other at the centre of the city. These two roads are along the North-South direction and East-West direction.

All the other streets of the city run parallel to these roads and are 200 m apart. There are 5 streets in each direction. Using, 1cm = 200 m, draw a model of the city on your notebook. Represent the roads/streets by single lines. There are many cross- streets in your model. A particular cross-street is made by two streets, one running in the North - South direction and another in the East - West direction. Each cross street is referred to in the following manner: If the 2nd street running in the North - South direction and 5th in the East - West direction meet at some crossing, then we will call this cross-street (2, 5). Using this convention, find:

1. How many cross-streets can be referred to as (4,3).

2. How many cross-streets can be referred to as (3,4)

Solution:

1. Only one cross-street can be referred to as (4, 3) as we see from the figure.

2. Only one cross-street can be referred to as (3, 4) as we see from the figure.