The answer depends on the shapes and sizes of the triangles. I can make a big triangle, a quadrilateral, pentagon, hexagon, etc up to 12 sides.
the shape that can make two smaller triangles is parallelogram.
To create a pentagon using 6 tangram pieces, start by selecting the shapes: 2 large triangles, 1 medium triangle, and 3 small triangles. Arrange the two large triangles to form a base, positioning the medium triangle on top to create the upper part. Use the small triangles to fill in the gaps and complete the pentagon shape. Adjust their positions until the outline resembles a pentagon.
a square
Hexagon
Simply assemble the triangles in to a rectangle.
the shape that can make two smaller triangles is parallelogram.
All you have to use is the five triangles. The two large triangles make a square in the middle, the two small triangles make a large triangle on one side and the middle triangle on the other side.
2 small triangles 1 med. triangle 2 large triangles 1 parallelogram and a square
If you have 8 small triangles made of 16 lines how can you make four small triangles if it is a parallelogram?
To create a pentagon using 6 tangram pieces, start by selecting the shapes: 2 large triangles, 1 medium triangle, and 3 small triangles. Arrange the two large triangles to form a base, positioning the medium triangle on top to create the upper part. Use the small triangles to fill in the gaps and complete the pentagon shape. Adjust their positions until the outline resembles a pentagon.
Hexagon
a square
Simply assemble the triangles in to a rectangle.
The two triangles would make either a square or a rectangle.
All of them.
the star of david
You could make a parallelogram.