As answered on another link, it's a tetrahedron, provided the faces are equal
It is a tetrahedron which is a triangular based pyramid
a tetrahedron (triangular-based pyramid) has 5 triangular faces. * * * * * No. A tetrahedron (as the name should suggest) has 4 faces - not 5. The question does not preclude additional sides nor faces. The answer, in fact, is a pentagonal pyramid.
triangular pyramid
Oh, dude, another name for a square-based pyramid is a "pyramid with a square base." Like, it's literally in the name. It's not rocket science, just a pyramid chillin' on a square. So, yeah, square-based pyramid, that's the vibe.
A tetrahedron.
A triangular pyramid is called a Tetrahedron ■
a triangular based pyramid
As answered on another link, it's a tetrahedron, provided the faces are equal
Another name is tetrahedra
A triangular based pyramid with 4 equilateral triangle faces is a tetrahedron
A tetrahedron.
A triangular pyramid.
it is also called a triangular prism
It is a tetrahedron which is a triangular based pyramid
A tetrahedron, though a triangular pyramid is a perfectly acceptable name.
The two general names are a quadrilateral based pyramid and a triangular prismoid.