the shape that can make two smaller triangles is parallelogram.
a square
A hexagon.
bunny rabbit
triangular prism
the shape that can make two smaller triangles is parallelogram.
a square
A hexagon.
bunny rabbit
Pyramid
Put four equilateral triangles so that each one of them has a vertex at a single point and the triangles abut one another. The shape will be 4/6 (= 2/3) of a regular hexagon.
2 triangles or 2 quadrilaterals
There is no 3D shape with 6 faces: 4 rectangles and 2 triangles. See the link for all forms of hexahedra.
A triangular prism.
triangular prism
A rectangle.. If you combine the triangles to make another square and then place all the squares in a row it makes a rectangle. you can also make a trapezium, if you place the 2 squares next to each other and then the triangles beside them...
2 triangles