Triangles make 3 sided shapes that have 3 interior angles that add up to 180 degrees
the shape that can make two smaller triangles is parallelogram.
a square
Hexagon
You could make a parallelogram.
a weird trapezoid
the shape that can make two smaller triangles is parallelogram.
Hexagon
a square
The two triangles would make either a square or a rectangle.
All of them.
You could make a parallelogram.
Originating from one vertex there are 27 triangles
11
Square pyramid
A parallelogram.
There are 4 triangles that make up a pyramid. 4 on the sides and on the bottom a square or rectangle.
a weird trapezoid