square based pyramid
An icosahedron.
A hexagon based pyramid.
The shape you are describing is a prism, specifically a triangular prism. It has two congruent triangular bases and three rectangular faces connecting the corresponding sides of the triangles. This 3D shape maintains the same cross-section along its length, resulting in the congruent triangles and the rectangular sides.
The two congruent 3D triangles were equal in shape, size, length and volume.
A 3D shape with all triangular faces can be a tetrahedron pyramid.
An icosahedron.
A hexagon based pyramid.
The shape you are describing is a prism, specifically a triangular prism. It has two congruent triangular bases and three rectangular faces connecting the corresponding sides of the triangles. This 3D shape maintains the same cross-section along its length, resulting in the congruent triangles and the rectangular sides.
The two congruent 3D triangles were equal in shape, size, length and volume.
A 3D shape with all triangular faces can be a tetrahedron pyramid.
A cube satisfies that description.
A triangular pyramid.
triangular prisom
A TETRAHEDRON. Incorrectly named as a 'triangular pyramid'.
The simplest such shape is PYRAMID.
a duodecahedron is one 3D shape that has triangles, and so is an icosahedron. there are others, but they have very long names
Triangular Prism