Tetrahedron or Triangular Pyramid
The simplest such shape is PYRAMID.
square based pyramid
A tetrahedron.
Yes. for example to make a pyramid, you need 4 triangles and a square
The 3D shape made up of 4 triangles and 1 square is a square pyramid. It has a square base and four triangular faces that converge at a single point, known as the apex. The triangular faces are the lateral sides of the pyramid, while the square forms the base.
The simplest such shape is PYRAMID.
The three-dimensional shape consisting of 4 triangles is called a pyramid, or a triangular prism.
Square pyramid
A Triangular Pyramid has 4 triangles and 1 square.
A tetrahedron (triangular pyramid).
square based pyramid
There is no 3D shape with 6 faces: 4 rectangles and 2 triangles. See the link for all forms of hexahedra.
A TETRAHEDRON. Incorrectly named as a 'triangular pyramid'.
A three-sided pyramid, also termed a triangular prism.
pyramid
A rectangular based pyramid would fit the given description
It doesn't exist. The least number of sides for a 3-D shape only made of triangles is 4.