Look at the following matchstick pattern of letter A, the A's are | Filo
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Class 11

Math

Co-ordinate Geometry

Straight Lines

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Look at the following matchstick pattern of letter , the are not separate. Two neighbouring have two common matchsticks. Observe the pattern and find the rule that gives the number of matchsticks.

Solution: in 1st it has 6 matchsticks in 2nd it has 10 matchsticks then it has 14 matchsticks 
i.e. in nth figure it has 6+4(n-1) matchsticks 
i.e. 2+4n
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