Question for Angela Fajardo

In figure 1, there is $1$ triangle.
In figure 2, there are $4$ triangles.
In figure 3, there are $9$ triangles.
(For clarification):-
In figure 4, there are $16$ triangles.
In figure 5, there are $25$ triangles.

So, we see that in the $n^{\text{th}}$ figure, the total number of triangle is given by the formula $n^2$

So, in the ${2016}^{\text{th}}$ figure, there would be ${2016}^2$ triangles.
= 4064256 triangles. $_\square$