To solve the problem of counting triangles in the figure (assuming a common configuration), the key is to systematically count all possible triangles by size and arrangement.

For the typical figure associated with this question, the number of triangles is calculated as follows:

• Smallest triangles: 9
• Medium triangles (combining 2 small ones): 3
• Larger triangles (combining 3 small ones): 1

Wait, no—adjusting for the exact figure (common in such problems), the correct count is 13.

Answer: 13

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