Previous Year Questions

To determine the number of triangles in the given figure:

1) Step 1: Count all smaller individual triangles.

2) Step 2: Look for combinations of smaller triangles forming larger triangles.

3) Step 3: Include overlapping or nested triangles.

Detailed enumeration:

· Count all small triangles (let's say, numbered sequentially as per the figure).

· Count triangles formed by combining two smaller triangles.

· Count triangles formed by combining multiple smaller triangles.

· Sum up all unique triangles.

The total is 21 triangles.