(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: (i) how many cross - streets can be referred to as (4, 3) . (ii) how many cross - streets can be referred to as (3, 4) .

  • Draw two perpendicular lines that will be considered as the two main roads, mark them as N-S and E-W.
  • Considering the scale as 1 cm = 200 m as given.
  • Let us mark the intersection of the main road as point C.
  • Draw 5-5 parallel line to both the main roads.

(i) We can clearly see that there is only one cross street that can be marked as (3,4).
(ii) We can clearly see that there is only one cross street that can be marked as (4,3).

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