1. Find out the number of triangles in the given pattern.





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  • By: anil on 05 May 2019 02.24 am
    No of unit triangles = 16 No of triangles with 2 or 3 unit triangles = 0 No of triangles with 4 unit triangles (vertex up + vertex down) = 6 + 1 = 7 No of triangles with 5,6,7,8 unit triangles = 0 No of triangles with 9 unit triangles = 3 Full triangle = 1 Total number of triangles = 27 Hence, option C is the correct answer.
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