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How many triangles in the figure below?

 

 Jul 24, 2022
 #1
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+1

1 x 1 triangles: 3

1 x 2 triangles: 2

1 x 3 triangles: 1

2 x 1 triangles: 3

2 x 2 triangles: 2

2 x 3 triangles: 1

3 x 1 triangles: 3

3 x 2 triangles: 2

3 x 3 triangles: 1

4 x 1 triangles: 3

4 x 2 triangles: 2

4 x 3 triangles: 1

 

Now, add them up...

 Jul 24, 2022

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