it makes a dimond
the shape that can make two smaller triangles is parallelogram.
Two triangles
The two triangles would make either a square or a rectangle.
All of them.
Two triangles can but its an irregular shape
Those would be SIMILAR triangles.
A triangular prism, where the two ends are triangles.
There are quite a few. Circles, squares, triangles...
When you draw a diagonal in a rectangle or a parallelogram, it divides the shape into two congruent triangles, meaning both triangles are the same size and shape. In contrast, drawing a diagonal in a trapezoid results in two triangles that can differ in size and shape, as the bases of the trapezoid are unequal. Thus, different size and shape triangles form only in the trapezoid.
Triangular prism
A rhombus.
Same size and shape