triangular prism
A triangular prism and a square pyramid.
It gets confusing. In a futile attempt to standardize terminology, use "sides" for 2d figures (the sides of a square), use "edges" for 3d figures (the edges of a prism) and use "faces" for 3d figures (the faces of a tetrahedron).
A tetrahedron (4 triangular faces) is the only polyhedron that has a unique configuration of faces, edges and vertices. For any polyhedron with n (>4) faces, there is a prism with a pair of n-2 sided polygons as bases as well a pyramid whose base is an n-1 sided polygon. There are many other configurations for polyhedra with more faces. For example, there are ten [topologically] different figures with 6 faces: 3 of these are concave polyhedra.
The number of digits in the coefficient should be exactly the same as the number of significant figures.
no
They are square based pyramids
A triangular prism and a square pyramid.
A square and a rectangle as well as other quadrilaterals
It gets confusing. In a futile attempt to standardize terminology, use "sides" for 2d figures (the sides of a square), use "edges" for 3d figures (the edges of a prism) and use "faces" for 3d figures (the faces of a tetrahedron).
The number of digits in the coefficient should be exactly the same as the number of significant figures.
When adding or multiplying numbers, the result should have the same number of decimal places as the number with the fewest decimal places. For addition, the result should have the same number of significant figures as the number with the fewest significant figures. For multiplication, the result should have the same number of significant figures as the number with the fewest significant figures.
A tetrahedron (4 triangular faces) is the only polyhedron that has a unique configuration of faces, edges and vertices. For any polyhedron with n (>4) faces, there is a prism with a pair of n-2 sided polygons as bases as well a pyramid whose base is an n-1 sided polygon. There are many other configurations for polyhedra with more faces. For example, there are ten [topologically] different figures with 6 faces: 3 of these are concave polyhedra.
Yes, they both have 6 faces.
no
This pair does not have the same or the same number of significant figures.
If the number of vertices is not the same as the number of faces, it cannot be a pyramid.
cone