To solve this problem, let's assume that Teeka used "x" pairs of square tiles.
We know that for every 2 square tiles, she used 8 triangles. Therefore, the number of triangles used is directly proportional to the number of pairs of square tiles used.
We can set up the following proportion:
$\frac{\text{Number of triangles}}{\text{Number of pairs of square tiles}} = \frac{8}{2}$
Simplifying the proportion, we get:
$\frac{\text{Number of triangles}}{x} = 4$
Cross-multiplying, we get:
Number of triangles = 4x
Given that Teeka used 48 square tiles, we can substitute this value into the equation to find the number of triangles:
Number of triangles = 4 * 48 = 192
Therefore, Teeka used 192 triangles.
Since none of the given options match the correct answer, it seems that the correct answer is not provided.