TRIANGLES
The 3D shape you are describing is a pentagonal pyramid. It has a pentagonal base with five sides, and five vertices where the triangular faces meet. The three rectangle faces are lateral faces that connect the triangular base to the apex of the pyramid. The pentagonal pyramid is a type of pyramid with a polygonal base and triangular faces.
Triangular pyramid
The correct name for a 3D triangular pyramid is a 'TETRAHEDRON. It has FOUR(4) faces.
That 3D shape is called triangular pyramid.
A pyramid.
A tetrahedron, also called a pyramid is a three-dimensional shape with four faces.
5 faces
A Heptagon is a 3d object with 7 faces. An example of a heptagon is a hexagonal pyramid (that is a pyramid with a hexagon for the base).
a pyramid does.
A pyramid
a pyramid does.
A pyramid.