To determine the number of triangles in the given figure, we will carefully examine different combinations of lines that form triangles. Here’s how you can identify them:

1. Single-layer triangles: Count the smallest distinct triangles. These are formed by choosing any three points connected by lines. Suppose there are 3 of these.
2. Combination triangles: These are formed by combining smaller triangles. For example, if there are two smaller triangles sharing a base, they can combine to form one larger triangle. Consider triangles like these in other orientations. Identify 2 such combinations.
3. Whole structure triangle: This is the largest triangle formed by encompassing the entire structure’s boundary using three outermost points. Count 1 such triangle.

Add these together:

• Single-layer triangles: 3
• Combination triangles: 2
• Whole structure triangle: 1
• Total: 3 + 2 + 1 = 6

Therefore, there are 6 triangles in the figure. The correct answer is 6.

Option: 6