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CBSE Class 7 Answered

 
 
There are how many triangles in these images?
Asked by Anuradha | 24 Jan, 2016, 08:19: PM
answered-by-expert Expert Answer
The blue figure has 32 triangles.
The orange figure has 65 triangles.
 
The last figure has 124 triangles which can be caluclated as follows:
 
The above grid has 28 triangles.
Hence, 4 such grids will have 28×4 = 112 triangles.
 
 
The shaded region above has 4 triangles excluding the triangles already counted previously.
 
 
The shaded region above has 8 triangles excluding the triangles already counted previously.
 
Hence, there is a total of 112 + 4 + 8 = 124 triangles.
 
 
 
Answered by Kajal Gupta | 27 Jan, 2016, 12:43: PM
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