## 1.) How many triangles do you see this picture ?

### Answer with solution

**How?**

Let’s say the smallest triangle side is 1 cms, then

**Number of triangles with side 1cms**: 12(3+4+3+2 upward facing) + 12(downward facing)

**Number of triangles with side 2cms**: 6(3+2+1 upward facing) + 6(downward facing)

**Number of triangles with side 3cms**: 1(upward facing) + 1(downward facing)

### Thus, the total number of triangles in above puzzle are 38.

Facebook Comments