7
A square based pyramid has 4 triangular faces which means it has a total of 5 faces
Every pair of opposite sides on a die adds up to 7: 1-6, 2-5, 3-4.
It is a standard die, so called because each pair of opposite faces adds to seven.
Opposite faces.
no
The opposite sides of a die always total 7, so 2 is opposite to 5, 3 to 4 and 6 to 1
If the type of solid (die) is a Platonic solid, then the opposite sides add to the number of faces plus one. For example, a cube's opposite sides add to seven.
prisms ?
a prism
triangular prisom
This shape has 2 opposite identical faces and some other which are parallelograms is a prism. A cylinder shape has 2 circular faces and one curved face.