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CBSE Class 6 Answered

Shweta has made a chart on ‘Elementary Shapes’. She develops a pattern for the border using sticks as shown:   Find a rule that helps her to find the number of sticks.        
Asked by Topperlearning User | 21 Jul, 2014, 03:20: PM
answered-by-expert Expert Answer

Let the number of triangles be n.

 

 

For 1 triangle: Number of sticks = 2 × 1 + 1 = 3 sticks

 

 

For 2 triangles: Number of sticks = 2 × 2 + 1 = 5 sticks

 

 

∴ Number of sticks used = 2 × n + 1

 

Answered by | 21 Jul, 2014, 05:20: PM

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