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How many triangles are in the diagram?

 

 May 9, 2020
 #1
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Hi Guest!

 

I'm sure there's a faster way to do this, but here's my solution anyway:

 

There are 16 triangles with a base of 1 in the picture.

 

There are 6 triangles with a base of 2.

 

There are 3 triangles with a base of 3.

 

There is 1 triangle with a base of 4.

 

And there is 1 upside-down triangle with a base of 3 in the center.

 

16+6+3+1+1=27 triangles!

 

I hope this helped you, guest!

:)

 May 9, 2020

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