The body of my sad character is also a triangle, because when I am sad I tend to avoid people and also avoid talking to anyone, so I felt like the triangle shape makes it easier and possible for me to find a corner and sit in it alone.
The body of my happy character is a circle, because when I am happy I talk and move a lot, so having a circle shape helps, the circle can never stay in one place, it keeps bumping from wall to wall and side to side.






On the other side:
- When a person is sad, his eyes get closer to each other, so by following the outline of a sad face, it kind of in a way looks like a triangle.





Why did I choose these geometric shapes to represent my happy child and sad one?
When a person smiles, what happens to his face features, not in details, but looking at the face in its simplest form:
- The eyes get stretched away from each other and your smile almost looks like a half circle. At that point if we follow the outline of the face, the face almost looks like a circle.