Find out the number of triangles in the given figure.

Let's count the total number of triangles systematically:
1. The main figure contains a large square divided by two diagonals and one central horizontal line.
2. Let's use the standard counting trick for a square divided by both diagonals:
* The central intersection splits the square into $4$ small quadrants, each containing $2$ small individual triangles formed by the horizontal dividing line.
* Total single small triangles $=8$.

3. Combining two adjacent single small triangles inside each quadrant:
* There are $4$ larger triangles formed entirely by the intersection of diagonals (each quadrant/quarter contains $1$ large triangle facing outwards).
* Total $=4$.

4. Combining small triangles across the horizontal line and diagonals:
* Looking at the horizontal baseline split, there are $4$ medium triangles sharing the central line.
* There are $4$ additional combinations on the side boundaries.

5. Let's count completely:
* Individual single triangles visible $=8$
* Triangles composed of $2$ parts $=8$
* Triangles composed of $4$ parts $=4$

$$\text{Total number of triangles}=8+8+4=20$$