The icosahedron is the shape that has 20 sides. The icosahedron also has five triangular faces that join together at each vertex.
Triangular Pyramid......... The faces are Triangular....
triangular prism
The solid shape that has one square face and four triangular faces is called a pyramid. If you were to have a shape that had four triangular faces and no square face, it would be called a triangular pyramid.
It is a triangular prism.
The icosahedron is the shape that has 20 sides. The icosahedron also has five triangular faces that join together at each vertex.
Triangular pyramid.
That shape is a unit equilateral triangular dipyramid, and it has 6 faces.
This 3D shape could be a square based pyramid.
A shape that has some triangular faces is a pyramid.
A pyramid with an irregular pentagon base.
A pyramid. But the point where the triangular faces meet is a vertex, not a vortex. A vortex is a spinning mass of fluid like a whirlpool!
A hexahedron or a triangular dipyramid. This is the shape formed by two triangular pyramids (tetrahedrons) stuck together along one triangular face.
Triangular Pyramid......... The faces are Triangular....
A triangular dipyramid - two triangular pyramids stuck together.
An octahedron: two quadrilateral based pyramids with their bases together.
triangular prism