How many triangles are there in the given figure?![Screenshot 2025-05-06 155413.png](https://res.cloudinary.com/aptidude/image/upload/v1746527075/aptidude_questions/zzciaqyhzuiztugznoqj.png)

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To solve this problem, we need to systematically count all the triangles in the given figure. Since the figure is not shown, let's assume it is a standard triangle divided into smaller triangles by drawing lines from the vertices and/or midpoints (as is common in such questions).

Step 1: Count all the smallest triangles (unit triangles). Suppose there are 9 such triangles.

Step 2: Count all triangles formed by combining two or more unit triangles. For example, triangles formed by joining two adjacent unit triangles, or by combining three to form a larger triangle, etc.

Step 3: Count the largest triangle (the whole figure itself).

Step 4: Add up all the triangles from steps 1, 2, and 3.

For a standard figure often used in such questions (like a triangle divided into 9 smaller triangles by drawing lines from each vertex to the midpoint of the opposite side), the total number of triangles is 21. This is a well-known result for such figures.

Therefore, the correct answer is 21.

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