To determine the number of triangles in the given figure, follow these steps:

1. Identify smaller triangles formed within the larger triangle.
2. Count the single smallest triangles that can be seen. In this case, there are 8 smallest triangles.
3. Identify the combinations of two or more smaller triangles forming larger triangles.
4. Count triangles formed by combining two smallest triangles. You can find 3 such triangles here.
5. Count triangles formed by combining three smallest triangles. There are 2 such triangles.
6. Finally, add the complete triangle itself as the largest triangle.

By counting carefully, you will find:

• 8 smallest triangles
• 3 triangles made of two small triangles combining
• 2 triangles made of three small triangles combining
• 1 large triangle that is the entire figure

Adding these together, the total number of triangles is 13.

Thus, the correct answer is 13.